implement the flutter plugin

.github/FUNDING.yml

@@ -1,2 +1,2 @@
 patreon: tanersener
-custom: ['https://buymeacoff.ee/tanersener','https://paypal.me/teodosiyminchev']
+custom: [ 'https://www.patreon.com/tanersener','https://opencollective.com/ffmpeg-kit','https://buymeacoff.ee/tanersener','https://paypal.me/teodosiyminchev' ]

.gitignore

@@ -2,3 +2,4 @@
 /*.log
 /prebuilt/
 .DS_Store
+.idea

README.md

@@ -1,16 +1,20 @@
-# FFmpegKit ![GitHub release](https://img.shields.io/badge/release-v4.5-blue.svg) ![Maven Central](https://img.shields.io/maven-central/v/com.arthenica/ffmpeg-kit-min) ![CocoaPods](https://img.shields.io/cocoapods/v/ffmpeg-kit-ios-min) [![npm](https://img.shields.io/npm/v/ffmpeg-kit-react-native.svg)](ffmpeg-kit-react-native)
+# FFmpegKit ![GitHub release](https://img.shields.io/badge/release-v4.5-blue.svg) ![Maven Central](https://img.shields.io/maven-central/v/com.arthenica/ffmpeg-kit-min) ![CocoaPods](https://img.shields.io/cocoapods/v/ffmpeg-kit-ios-min) ![pub](https://img.shields.io/pub/v/ffmpeg_kit_flutter.svg) ![npm](https://img.shields.io/npm/v/ffmpeg-kit-react-native.svg)
 
-FFmpeg Kit for applications.
+`FFmpegKit` is a collection of tools to use `FFmpeg` in `Android`, `iOS`, `macOS`, `tvOS`, `Flutter` and `React Native` applications.
+
+It includes scripts to build `FFmpeg` libraries natively, a wrapper library to run `FFmpeg`/`FFprobe` commands in
+ applications and 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases),
+ [Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and [npm](https://www.npmjs.com).
 
 <img src="https://github.com/tanersener/ffmpeg-kit/blob/development/docs/assets/ffmpeg-kit-icon-v9.png" width="240">
 
 ### 1. Features
-- Scripts to build FFmpeg libraries
+- Scripts to build FFmpeg libraries natively
 - `FFmpegKit` wrapper library to run `FFmpeg`/`FFprobe` commands in applications
 - Supports native platforms: Android, iOS, macOS and tvOS
-- Supports hybrid platforms: React Native
+- Supports hybrid platforms: Flutter, React Native
 - Based on FFmpeg `v4.5-dev` with optional system and external libraries
-- 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases), [Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org) and [npm](https://www.npmjs.com)
+- 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases), [Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and [npm](https://www.npmjs.com)
 - Licensed under `LGPL 3.0`, or `GPL v3.0` if GPL licensed libraries are enabled
 
 ### 2. Android
@@ -23,31 +27,38 @@ See [Android](https://github.com/tanersener/ffmpeg-kit/tree/main/android) to lea
 See [Apple](https://github.com/tanersener/ffmpeg-kit/tree/main/apple) to use `FFmpegKit` on `Apple` platforms 
 (`iOS`, `macOS`, `tvOS`). 
 
-### 4. React Native
+### 4. Flutter
+
+See [Flutter](https://github.com/tanersener/ffmpeg-kit/tree/main/flutter/flutter) to learn more about `FFmpegKit` for
+`Flutter`.
+
+### 5. React Native
 
 See [React Native](https://github.com/tanersener/ffmpeg-kit/tree/main/react-native) to learn more about `FFmpegKit` for
 `React Native`.
 
-### 5. Build Scripts
+### 6. Build Scripts
 
 Use `android.sh`, `ios.sh`, `macos.sh` and `tvos.sh` to build `FFmpegKit` for each native platform.
 
 All scripts support additional options to enable optional libraries and disable platform architectures.
 
-### 6. FFmpegKit Library
+### 7. FFmpegKit Library
 
 `FFmpegKit` is a wrapper library that allows you to easily run `FFmpeg`/`FFprobe` commands in applications. It 
 provides additional features on top of `FFmpeg` to enable platform specific resources, control how commands are 
 executed and how the results are handled.
 
 `Android` library of `FFmpegKit` has a `Java` API, `Apple` libraries (`iOS`, `macOS`, `tvOS`) have an `Objective-C`
- API and `React Native` library provides a `JavaScript` API, which are identical in terms of features and capabilities.
+ API, `Flutter`library comes with a `Dart` API and `React Native` library provides a `JavaScript` API, which are
+ identical in terms of features and capabilities.
 
-### 7. Packages
+### 8. Packages
 
 There are eight different `ffmpeg-kit` packages distributed on 
 [Github](https://github.com/tanersener/ffmpeg-kit/releases), 
-[Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org) and [npm](https://www.npmjs.com).
+[Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and
+ [npm](https://www.npmjs.com).
 Below you can see which system libraries and external libraries are enabled in each one of them.
 
 Please remember that some parts of `FFmpeg` are licensed under the `GPL` and only `GPL` licensed `ffmpeg-kit` packages 
@@ -102,7 +113,7 @@ include them.
  - `AVFoundation` is not available on `tvOS`
  - `VideoToolbox` is not available on LTS releases of `iOS` and `tvOS`
 
-### 8. Versions
+### 9. Versions
 
 `FFmpegKit` binaries generated use the same major and minor version numbers as the upstream `FFmpeg` project. 
 
@@ -111,13 +122,15 @@ indicates that `FFmpeg` source code is cloned from the `FFmpeg` `master` branch.
 
 |  Platforms |  FFmpegKit Version | FFmpeg Version | Release Date |
 | :----: | :----: | :----: | :----: |
+| Flutter | [4.5.0](https://github.com/tanersener/ffmpeg-kit/releases/tag/flutter.v4.5.0) | 4.5-dev-2008 | Oct 05, 2021 |
+| Flutter | [4.5.0-LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/flutter.v4.5.0.LTS) | 4.5-dev-2008 | Oct 05, 2021 |
 | React Native | [4.5.0](https://github.com/tanersener/ffmpeg-kit/releases/tag/react.native.v4.5.0) | 4.5-dev-2008 | Oct 01, 2021 |
 | Android<br>Apple | [4.5](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.5) | 4.5-dev-2008 | Sep 18, 2021 |
 | Android<br>Apple | [4.5.LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.5.LTS) | 4.5-dev-2008 | Sep 18, 2021 |
 | Android<br>Apple | [4.4](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.4) | 4.4-dev-3015 | Mar 03, 2021 |
 | Android<br>Apple | [4.4.LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.4.LTS) | 4.4-dev-3015 | Mar 03, 2021 |
 
-### 9. LTS Releases
+### 10. LTS Releases
 
 `FFmpegKit` binaries are published in two release variants: `Main Release` and `LTS Release`. 
 
@@ -146,11 +159,11 @@ This table shows the differences between two variants.
 | tvOS Architectures | arm64<br/>x86-64<br/>arm64-simulator | arm64<br/>x86-64 |
 | tvOS Bundle Format | XCFrameworks | Frameworks |
 
-### 10. Documentation
+### 11. Documentation
 
 A more detailed documentation is available under [Wiki](https://github.com/tanersener/ffmpeg-kit/wiki).
 
-### 11. Test Applications
+### 12. Test Applications
 
 You can see how `FFmpegKit` is used inside an application by running test applications created under 
 [FFmpegKit Test](https://github.com/tanersener/ffmpeg-kit-test) project.
@@ -158,12 +171,12 @@ You can see how `FFmpegKit` is used inside an application by running test applic
 All applications are identical and supports command execution, video encoding, accessing https urls, encoding audio,
 burning subtitles, video stabilisation, pipe operations and concurrent command execution.
 
-### 12. License
+### 13. License
 
 `FFmpegKit` is licensed under the `LGPL v3.0`. However, if source code is built using the optional `--enable-gpl` flag
 or prebuilt binaries with `-gpl` postfix are used, then `FFmpegKit` is subject to the `GPL v3.0` license.
 
-### 13. Patents
+### 14. Patents
 
 It is not clearly explained in their documentation, but it is believed that `FFmpeg`, `kvazaar`, `x264` and `x265`
 include algorithms which are subject to software patents. If you live in a country where software algorithms are
@@ -174,15 +187,16 @@ that you seek legal advice first. See [FFmpeg Patent Mini-FAQ](https://ffmpeg.or
 distribute that library, then you are subject to pay MPEG LA licensing fees. Refer to
 [OpenH264 FAQ](https://www.openh264.org/faq.html) page for the details.
 
-### 14. Contributing
+### 15. Contributing
 
 Feel free to submit issues or pull requests. 
 
 Please note that `main` includes only the latest released source code. Changes planned for the next release are
 developed under the `development` branches (`development` for native platforms, `development-react-native` for
-`react-native`). Therefore, if you want to create a pull request, please open it against them.
+`react-native`, `development-flutter` for `flutter`). Therefore, if you want to create a pull request, please open it
+ against them.
 
-### 15. See Also
+### 16. See Also
 
 - [FFmpeg API Documentation](https://ffmpeg.org/doxygen/4.0/index.html)
 - [FFmpeg Wiki](https://trac.ffmpeg.org/wiki/WikiStart)

docs/index.md

@@ -1,6 +1,10 @@
 # FFmpegKit
 
-FFmpeg Kit for applications.
+`FFmpegKit` is a collection of tools to use `FFmpeg` in `Android`, `iOS`, `macOS`, `tvOS`, `Flutter` and `React Native` applications.
+
+It includes scripts to build `FFmpeg` libraries natively, a wrapper library to run `FFmpeg`/`FFprobe` commands in
+applications and 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases),
+[Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and [npm](https://www.npmjs.com).
 
 <img src="https://github.com/tanersener/ffmpeg-kit/raw/main/docs/assets/ffmpeg-kit-icon-v9.png" width="180">
 
@@ -8,9 +12,9 @@ FFmpeg Kit for applications.
 - Scripts to build FFmpeg libraries
 - `FFmpegKit` wrapper library to run `FFmpeg`/`FFprobe` commands in applications
 - Supports native platforms: Android, iOS, macOS and tvOS
-- Supports hybrid platforms: React Native
+- Supports hybrid platforms: Flutter, React Native
 - Based on FFmpeg `v4.5-dev` with optional system and external libraries
-- 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases), [Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org) and [npm](https://www.npmjs.com)
+- 8 prebuilt binary packages available at [Github](https://github.com/tanersener/ffmpeg-kit/releases), [Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and [npm](https://www.npmjs.com)
 - Licensed under `LGPL 3.0`, or `GPL v3.0` if GPL licensed libraries are enabled
 
 ### 2. Android
@@ -23,31 +27,38 @@ See [Android](https://github.com/tanersener/ffmpeg-kit/tree/development/android)
 See [Apple](https://github.com/tanersener/ffmpeg-kit/tree/development/apple) to use `FFmpegKit` on `Apple` platforms
 (`iOS`, `macOS`, `tvOS`).
 
-### 4. React Native
+### 4. Flutter
+
+See [Flutter](https://github.com/tanersener/ffmpeg-kit/tree/main/flutter/flutter) to learn more about `FFmpegKit` for
+`Flutter`.
+
+### 5. React Native
 
 See [React Native](https://github.com/tanersener/ffmpeg-kit/tree/main/react-native) to learn more about `FFmpegKit` for
 `React Native`.
 
-### 5. Build Scripts
+### 6. Build Scripts
 
 Use `android.sh`, `ios.sh`, `macos.sh` and `tvos.sh` to build `FFmpegKit` for each native platform.
 
 All scripts support additional options to enable optional libraries and disable platform architectures.
 
-### 6. FFmpegKit Library
+### 7. FFmpegKit Library
 
 `FFmpegKit` is a wrapper library that allows you to easily run `FFmpeg`/`FFprobe` commands in applications. It
 provides additional features on top of `FFmpeg` to enable platform specific resources, control how commands are
 executed and how the results are handled.
 
 `Android` library of `FFmpegKit` has a `Java` API, `Apple` libraries (`iOS`, `macOS`, `tvOS`) have an `Objective-C`
-API and `React Native` library provides a `JavaScript` API, which are identical in terms of features and capabilities.
+API, `Flutter`library comes with a `Dart` API and `React Native` library provides a `JavaScript` API, which are
+identical in terms of features and capabilities.
 
-### 7. Packages
+### 8. Packages
 
 There are eight different `ffmpeg-kit` packages distributed on
 [Github](https://github.com/tanersener/ffmpeg-kit/releases),
-[Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org) and [npm](https://www.npmjs.com).
+[Maven Central](https://search.maven.org), [CocoaPods](https://cocoapods.org), [pub](https://pub.dev) and
+[npm](https://www.npmjs.com).
 Below you can see which system libraries and external libraries are enabled in each one of them.
 
 Please remember that some parts of `FFmpeg` are licensed under the `GPL` and only `GPL` licensed `ffmpeg-kit` packages
@@ -94,13 +105,15 @@ indicates that `FFmpeg` source code is cloned from the `FFmpeg` `master` branch.
 
 |  Platforms |  FFmpegKit Version | FFmpeg Version | Release Date |
 | :----: | :----: | :----: | :----: |
+| Flutter | [4.5.0](https://github.com/tanersener/ffmpeg-kit/releases/tag/flutter.v4.5.0) | 4.5-dev-2008 | Oct 05, 2021 |
+| Flutter | [4.5.0-LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/flutter.v4.5.0.LTS) | 4.5-dev-2008 | Oct 05, 2021 |
 | React Native | [4.5.0](https://github.com/tanersener/ffmpeg-kit/releases/tag/react.native.v4.5.0) | 4.5-dev-2008 | Oct 01, 2021 |
 | Android<br>Apple | [4.5](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.5) | 4.5-dev-2008 | Sep 18, 2021 |
 | Android<br>Apple | [4.5.LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.5.LTS) | 4.5-dev-2008 | Sep 18, 2021 |
 | Android<br>Apple | [4.4](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.4) | 4.4-dev-3015 | Mar 03, 2021 |
 | Android<br>Apple | [4.4.LTS](https://github.com/tanersener/ffmpeg-kit/releases/tag/v4.4.LTS) | 4.4-dev-3015 | Mar 03, 2021 |
 
-### 9. LTS Releases
+### 10. LTS Releases
 
 `FFmpegKit` binaries are published in two release variants: `Main Release` and `LTS Release`.
 
@@ -129,24 +142,24 @@ This table shows the differences between two variants.
 | tvOS Architectures | arm64<br/>x86-64<br/>arm64-simulator | arm64<br/>x86-64 |
 | tvOS Bundle Format | XCFrameworks | Frameworks |
 
-### 10. Documentation
+### 11. Documentation
 
 A more detailed documentation is available under [Wiki](https://github.com/tanersener/ffmpeg-kit/wiki).
 
-### 11. Test Applications
+### 12. Test Applications
 
 You can see how `FFmpegKit` is used inside an application by running test applications created under
 [FFmpegKit Test](https://github.com/tanersener/ffmpeg-kit-test) project.
 
 All applications are identical and supports command execution, video encoding, accessing https urls, encoding audio,
-burning subtitles, video stabilisation, pipe operations, concurrent command execution.
+burning subtitles, video stabilisation, pipe operations and concurrent command execution.
 
-### 12. License
+### 13. License
 
 `FFmpegKit` is licensed under the `LGPL v3.0`. However, if source code is built using the optional `--enable-gpl` flag
 or prebuilt binaries with `-gpl` postfix are used, then `FFmpegKit` is subject to the `GPL v3.0` license.
 
-### 13. Patents
+### 14. Patents
 
 It is not clearly explained in their documentation, but it is believed that `FFmpeg`, `kvazaar`, `x264` and `x265`
 include algorithms which are subject to software patents. If you live in a country where software algorithms are
@@ -157,15 +170,16 @@ that you seek legal advice first. See [FFmpeg Patent Mini-FAQ](https://ffmpeg.or
 distribute that library, then you are subject to pay MPEG LA licensing fees. Refer to
 [OpenH264 FAQ](https://www.openh264.org/faq.html) page for the details.
 
-### 14. Contributing
+### 15. Contributing
 
 Feel free to submit issues or pull requests.
 
 Please note that `main` includes only the latest released source code. Changes planned for the next release are
 developed under the `development` branches (`development` for native platforms, `development-react-native` for
-`react-native`). Therefore, if you want to create a pull request, please open it against them.
+`react-native`, `development-flutter` for `flutter`). Therefore, if you want to create a pull request, please open it
+against them.
 
-### 15. See Also
+### 16. See Also
 
 - [FFmpeg API Documentation](https://ffmpeg.org/doxygen/4.0/index.html)
 - [FFmpeg Wiki](https://trac.ffmpeg.org/wiki/WikiStart)

flutter/flutter/.gitignore

@@ -0,0 +1,5 @@
+.DS_Store
+.dart_tool/
+.packages
+.pub/
+build/

flutter/flutter/.metadata

@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: c5a4b4029c0798f37c4a39b479d7cb75daa7b05c
+  channel: stable
+
+project_type: plugin

flutter/flutter/CHANGELOG.md

@@ -0,0 +1,5 @@
+## 4.5.0
+- Initial release
+
+## 4.5.0-LTS
+- Initial LTS release

flutter/flutter/LICENSE

@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
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flutter/flutter/LICENSE.GPLv3

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
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+
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

flutter/flutter/README.md

@@ -0,0 +1,276 @@
+# FFmpegKit for Flutter
+
+### 1. Features
+
+- Includes both `FFmpeg` and `FFprobe`
+- Supports
+    - `Android`, `iOS` and `macOS`
+    - FFmpeg `v4.5-dev` releases
+    - `arm-v7a`, `arm-v7a-neon`, `arm64-v8a`, `x86` and `x86_64` architectures on Android
+    - `Android API Level 16` or later
+    - `armv7`, `armv7s`, `arm64`, `arm64-simulator`, `i386`, `x86_64`, `x86_64-mac-catalyst` and `arm64-mac-catalyst`
+      architectures on iOS
+    - `iOS SDK 9.3` or later
+    - `arm64` and `x86_64` architectures on macOS
+    - `macOS SDK 10.11+` or later
+    - Can process Storage Access Framework (SAF) Uris on Android
+    - 24 external libraries
+
+      `dav1d`, `fontconfig`, `freetype`, `fribidi`, `gmp`, `gnutls`, `kvazaar`, `lame`, `libass`, `libiconv`, `libilbc`
+      , `libtheora`, `libvorbis`, `libvpx`, `libwebp`, `libxml2`, `opencore-amr`, `opus`, `shine`, `snappy`, `soxr`
+      , `speex`, `twolame`, `vo-amrwbenc`
+
+    - 4 external libraries with GPL license
+
+      `vid.stab`, `x264`, `x265`, `xvidcore`
+
+- Licensed under LGPL 3.0, can be customized to support GPL v3.0
+
+### 2. Installation
+
+Add `ffmpeg_kit_flutter` as a dependency in your `pubspec.yaml file`.
+
+```yaml
+dependencies:
+  ffmpeg_kit_flutter: ^4.5.0
+```
+
+#### 2.1 Packages
+
+`ffmpeg` includes built-in encoders for some popular formats. However, there are certain external libraries that needs
+to be enabled in order to encode specific formats/codecs. For example, to encode an `mp3` file you need `lame` or
+`shine` library enabled. You have to install a `ffmpeg_kit_flutter` package that has at least one of them inside. To
+encode an `h264` video, you need to install a package with `x264` inside. To encode `vp8` or `vp9` videos, you need
+a `ffmpeg_kit_flutter` package with `libvpx` inside.
+
+`ffmpeg-kit` provides eight packages that include different sets of external libraries. These packages are named
+according to the external libraries included in them. Refer to
+[Packages](https://github.com/tanersener/ffmpeg-kit#8-packages) section of the project README to see the names of those
+packages and external libraries included in each of them.
+
+#### 2.2 Installing Packages
+
+Installing `ffmpeg_kit_flutter` enables the `https` package by default. It is possible to install the other packages
+using the following dependency format.
+
+```yaml
+dependencies:
+  ffmpeg_kit_flutter_<package name>: ^4.5.0
+```
+
+Note that hyphens in the package name must be replaced with underscores. Additionally, do not forget to use the package
+name in the import statements if you install a package.
+
+#### 2.3 Installing LTS Releases
+
+In order to install the `LTS` variant, append `-LTS` to the version you have for the `ffmpeg_kit_flutter` dependency.
+
+```yaml
+dependencies:
+  ffmpeg_kit_flutter: ^4.5.0-LTS
+```
+
+#### 2.4 LTS Releases
+
+`ffmpeg_kit_flutter` is published in two different variants: `Main Release` and `LTS Release`. Both releases share the
+same source code but is built with different settings (Architectures, API Level, iOS Min SDK, etc.). Refer to
+[LTS Releases](https://github.com/tanersener/ffmpeg-kit#10-lts-releases) section of the project README to see how they
+compare to each other.
+
+### 3. Using
+
+1. Execute FFmpeg commands.
+
+    ```dart
+    import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';
+
+    FFmpegKit.executeAsync('-i file1.mp4 -c:v mpeg4 file2.mp4', (session) async {
+      final returnCode = await session.getReturnCode();
+
+      if (ReturnCode.isSuccess(returnCode)) {
+
+        // SUCCESS
+
+      } else if (ReturnCode.isCancel(returnCode)) {
+
+        // CANCEL
+
+      } else {
+
+        // ERROR
+
+      }
+    });
+    ```
+
+2. Each `execute` call creates a new session. Access every detail about your execution from the session created.
+
+    ```dart
+    FFmpegKit.executeAsync('-i file1.mp4 -c:v mpeg4 file2.mp4', (session) async {
+
+      // Unique session id created for this execution
+      final sessionId = session.getSessionId();
+
+      // Command arguments as a single string
+      final command = session.getCommand();
+
+      // Command arguments
+      final commandArguments = session.getArguments();
+
+      // State of the execution. Shows whether it is still running or completed
+      final state = await session.getState();
+
+      // Return code for completed sessions. Will be undefined if session is still running or FFmpegKit fails to run it
+      final returnCode = await session.getReturnCode();
+
+      final startTime = session.getStartTime();
+      final endTime = await session.getEndTime();
+      final duration = await session.getDuration();
+
+      // Console output generated for this execution
+      final output = await session.getOutput();
+
+      // The stack trace if FFmpegKit fails to run a command
+      final failStackTrace = await session.getFailStackTrace();
+
+      // The list of logs generated for this execution
+      final logs = await session.getLogs();
+
+      // The list of statistics generated for this execution (only available on FFmpegSession)
+      final statistics = await (session as FFmpegSession).getStatistics();
+
+    });
+    ```
+
+3. Execute `FFmpeg` commands by providing session specific `execute`/`log`/`session` callbacks.
+
+    ```dart
+    FFmpegKit.executeAsync('-i file1.mp4 -c:v mpeg4 file2.mp4', (Session session) async {
+
+      // CALLED WHEN SESSION IS EXECUTED
+
+    }, (Log log) {
+
+      // CALLED WHEN SESSION PRINTS LOGS
+
+    }, (Statistics statistics) {
+
+      // CALLED WHEN SESSION GENERATES STATISTICS
+
+    });
+    ```
+
+4. Execute `FFprobe` commands.
+
+    ```dart
+    FFprobeKit.executeAsync(ffprobeCommand, (session) {
+
+      // CALLED WHEN SESSION IS EXECUTED
+
+    });
+    ```
+
+5. Get media information for a file/url.
+
+    ```dart
+    FFprobeKit.getMediaInformationAsync('<file path or url>', (session) async {
+      final information = await (session as MediaInformationSession).getMediaInformation();
+    });
+    ```
+
+6. Stop ongoing FFmpeg operations.
+
+- Stop all sessions
+  ```dart
+  FFmpegKit.cancel();
+  ```
+- Stop a specific session
+  ```dart
+  FFmpegKit.cancel(sessionId);
+  ```
+
+7. (Android) Convert Storage Access Framework (SAF) Uris into paths that can be read or written by
+   `FFmpegKit` and `FFprobeKit`.
+
+- Reading a file:
+  ```dart
+  FFmpegKitConfig.selectDocumentForRead('*/*').then((uri) {
+    FFmpegKitConfig.getSafParameterForRead(uri!).then((safUrl) {
+      FFmpegKit.executeAsync("-i ${safUrl!} -c:v mpeg4 file2.mp4");
+    });
+  });
+  ```
+
+- Writing to a file:
+  ```dart
+  FFmpegKitConfig.selectDocumentForWrite('video.mp4', 'video/*').then((uri) {
+    FFmpegKitConfig.getSafParameterForWrite(uri!).then((safUrl) {
+      FFmpegKit.executeAsync("-i file1.mp4 -c:v mpeg4 ${safUrl}");
+    });
+  });
+  ```
+
+8. Get previous `FFmpeg` and `FFprobe` sessions from the session history.
+
+    ```dart
+    FFmpegKit.listSessions().then((sessionList) {
+      sessionList.forEach((session) {
+        final sessionId = session.getSessionId();
+      });
+    });
+
+    FFprobeKit.listSessions().then((sessionList) {
+      sessionList.forEach((session) {
+        final sessionId = session.getSessionId();
+      });
+    });
+    ```
+
+9. Enable global callbacks.
+
+- Execute Callback, called when an async execution is ended
+
+  ```dart
+  FFmpegKitConfig.enableExecuteCallback((session) {
+    final sessionId = session.getSessionId();
+  });
+  ```
+
+- Log Callback, called when a session generates logs
+
+  ```dart
+  FFmpegKitConfig.enableLogCallback((log) {
+    final message = log.getMessage();
+  });
+  ```
+
+- Statistics Callback, called when a session generates statistics
+
+  ```dart
+  FFmpegKitConfig.enableStatisticsCallback((statistics) {
+    final size = statistics.getSize();
+  });
+  ```
+
+10. Register system fonts and custom font directories.
+
+    ```dart
+    FFmpegKitConfig.setFontDirectoryList(["/system/fonts", "/System/Library/Fonts", "<folder with fonts>"]);
+    ```
+
+### 4. Test Application
+
+You can see how `FFmpegKit` is used inside an application by running `flutter` test applications developed under
+the [FFmpegKit Test](https://github.com/tanersener/ffmpeg-kit-test) project.
+
+### 5. Tips
+
+See [Tips](https://github.com/tanersener/ffmpeg-kit/wiki/Tips) wiki page.
+
+### 6. License
+
+See [License](https://github.com/tanersener/ffmpeg-kit/wiki/License) wiki page.
+
+### 7. Patents
+
+See [Patents](https://github.com/tanersener/ffmpeg-kit/wiki/Patents) wiki page.

flutter/flutter/analysis_options.yaml

@@ -0,0 +1,68 @@
+analyzer:
+  enable-experiment:
+    - non-nullable
+  strong-mode:
+    implicit-dynamic: false
+  errors:
+    missing_required_param: warning
+    missing_return: warning
+
+linter:
+  rules:
+    - avoid_catching_errors
+    - avoid_function_literals_in_foreach_calls
+    - avoid_private_typedef_functions
+    - avoid_renaming_method_parameters
+    - avoid_returning_null_for_void
+    - avoid_unused_constructor_parameters
+    - avoid_void_async
+    - await_only_futures
+    - camel_case_types
+    - cancel_subscriptions
+    - comment_references
+    - constant_identifier_names
+    - control_flow_in_finally
+    - directives_ordering
+    - empty_statements
+    - file_names
+    - hash_and_equals
+    - implementation_imports
+    - iterable_contains_unrelated_type
+    - join_return_with_assignment
+    - lines_longer_than_80_chars
+    - list_remove_unrelated_type
+    - missing_whitespace_between_adjacent_strings
+    - no_runtimeType_toString
+    - non_constant_identifier_names
+    - only_throw_errors
+    - overridden_fields
+    - package_api_docs
+    - package_names
+    - package_prefixed_library_names
+    - prefer_asserts_in_initializer_lists
+    - prefer_const_constructors
+    - prefer_const_declarations
+    - prefer_expression_function_bodies
+    - prefer_final_locals
+    - prefer_function_declarations_over_variables
+    - prefer_initializing_formals
+    - prefer_inlined_adds
+    - prefer_interpolation_to_compose_strings
+    - prefer_is_not_operator
+    - prefer_null_aware_operators
+    - prefer_relative_imports
+    - prefer_typing_uninitialized_variables
+    - prefer_void_to_null
+    - provide_deprecation_message
+    - sort_pub_dependencies
+    - test_types_in_equals
+    - throw_in_finally
+    - unnecessary_brace_in_string_interps
+    - unnecessary_lambdas
+    - unnecessary_null_aware_assignments
+    - unnecessary_overrides
+    - unnecessary_parenthesis
+    - unnecessary_statements
+    - unnecessary_string_interpolations
+    - use_string_buffers
+    - void_checks

flutter/flutter/android/.gitignore

@@ -0,0 +1,9 @@
+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+gradle

flutter/flutter/android/build.gradle

@@ -0,0 +1,48 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.2.2'
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 30
+
+    defaultConfig {
+        minSdkVersion 24
+        targetSdkVersion 30
+        versionCode 450
+        versionName "4.5.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+        }
+    }
+    lintOptions {
+        disable 'GradleCompatible'
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+repositories {
+    mavenCentral()
+    jcenter()
+    google()
+}
+
+dependencies {
+    implementation 'androidx.annotation:annotation:1.2.0'
+    implementation 'com.arthenica:ffmpeg-kit-https:4.5'
+}
+

flutter/flutter/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true

flutter/flutter/android/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'ffmpeg-kit-flutter-android'

flutter/flutter/android/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.arthenica.ffmpegkit.flutter">
+</manifest>

flutter/flutter/android/src/main/java/com/arthenica/ffmpegkit/flutter/AsyncWriteToPipeTask.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.arthenica.ffmpegkit.flutter;
+
+import static com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin.LIBRARY_NAME;
+
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
+import java.io.IOException;
+
+import io.flutter.plugin.common.MethodChannel;
+
+public class AsyncWriteToPipeTask implements Runnable {
+    private final String inputPath;
+    private final String namedPipePath;
+    private final FFmpegKitFlutterMethodResultHandler resultHandler;
+    private final MethodChannel.Result result;
+
+    public AsyncWriteToPipeTask(@NonNull final String inputPath, @NonNull final String namedPipePath, @NonNull final FFmpegKitFlutterMethodResultHandler resultHandler, @NonNull final MethodChannel.Result result) {
+        this.inputPath = inputPath;
+        this.namedPipePath = namedPipePath;
+        this.resultHandler = resultHandler;
+        this.result = result;
+    }
+
+    @Override
+    public void run() {
+        final int rc;
+
+        try {
+            final String asyncCommand = "cat " + inputPath + " > " + namedPipePath;
+            Log.d(LIBRARY_NAME, String.format("Starting copy %s to pipe %s operation.", inputPath, namedPipePath));
+
+            final long startTime = System.currentTimeMillis();
+
+            final Process process = Runtime.getRuntime().exec(new String[]{"sh", "-c", asyncCommand});
+            rc = process.waitFor();
+
+            final long endTime = System.currentTimeMillis();
+
+            Log.d(LIBRARY_NAME, String.format("Copying %s to pipe %s operation completed with rc %d in %d seconds.", inputPath, namedPipePath, rc, (endTime - startTime) / 1000));
+
+            resultHandler.successAsync(result, rc);
+
+        } catch (final IOException | InterruptedException e) {
+            Log.e(LIBRARY_NAME, String.format("Copy %s to pipe %s failed with error.", inputPath, namedPipePath), e);
+            resultHandler.errorAsync(result, "WRITE_TO_PIPE_FAILED", e.getMessage());
+        }
+    }
+
+}

flutter/flutter/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterMethodResultHandler.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2018-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.arthenica.ffmpegkit.flutter;
+
+import static com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin.LIBRARY_NAME;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import io.flutter.plugin.common.EventChannel;
+import io.flutter.plugin.common.MethodChannel;
+
+public class FFmpegKitFlutterMethodResultHandler {
+    private final Handler handler;
+
+    FFmpegKitFlutterMethodResultHandler() {
+        handler = new Handler(Looper.getMainLooper());
+    }
+
+    void successAsync(final MethodChannel.Result result, final Object object) {
+        handler.post(() -> {
+            if (result != null) {
+                result.success(object);
+            } else {
+                Log.w(LIBRARY_NAME, String.format("ResultHandler can not send successful response %s on a null method call result.", object));
+            }
+        });
+    }
+
+    void successAsync(final EventChannel.EventSink eventSink, final Object object) {
+        handler.post(() -> {
+            if (eventSink != null) {
+                eventSink.success(object);
+            } else {
+                Log.w(LIBRARY_NAME, String.format("ResultHandler can not send event %s on a null event sink.", object));
+            }
+        });
+    }
+
+    void errorAsync(final MethodChannel.Result result, final String errorCode, final String errorMessage) {
+        errorAsync(result, errorCode, errorMessage, null);
+    }
+
+    void errorAsync(final MethodChannel.Result result, final String errorCode, final String errorMessage, final Object errorDetails) {
+        handler.post(() -> {
+            if (result != null) {
+                result.error(errorCode, errorMessage, errorDetails);
+            } else {
+                Log.w(LIBRARY_NAME, String.format("ResultHandler can not send failure response %s:%s on a null method call result.", errorCode, errorMessage));
+            }
+        });
+    }
+
+    void notImplementedAsync(final MethodChannel.Result result) {
+        handler.post(() -> {
+            if (result != null) {
+                result.notImplemented();
+            } else {
+                Log.w(LIBRARY_NAME, "ResultHandler can not send not implemented response on a null method call result.");
+            }
+        });
+    }
+
+}

flutter/flutter/ios/.gitignore

@@ -0,0 +1,37 @@
+.idea/
+.vagrant/
+.sconsign.dblite
+.svn/
+
+.DS_Store
+*.swp
+profile
+
+DerivedData/
+build/
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+
+.generated/
+
+*.pbxuser
+*.mode1v3
+*.mode2v3
+*.perspectivev3
+
+!default.pbxuser
+!default.mode1v3
+!default.mode2v3
+!default.perspectivev3
+
+xcuserdata
+
+*.moved-aside
+
+*.pyc
+*sync/
+Icon?
+.tags*
+
+/Flutter/Generated.xcconfig
+/Flutter/flutter_export_environment.sh

flutter/flutter/ios/Classes/FFmpegKitFlutterPlugin.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2018-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import <Flutter/Flutter.h>
+
+@interface FFmpegKitFlutterPlugin : NSObject<FlutterPlugin,FlutterStreamHandler>
+@end

flutter/flutter/ios/ffmpeg_kit_flutter.podspec

@@ -0,0 +1,135 @@
+Pod::Spec.new do |s|
+  s.name             = 'ffmpeg_kit_flutter'
+  s.version          = '4.5.0'
+  s.summary          = 'FFmpeg Kit for Flutter'
+  s.description      = 'A Flutter plugin for running FFmpeg and FFprobe commands.'
+  s.homepage         = 'https://github.com/tanersener/ffmpeg-kit'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Taner Sener' => 'tanersener@gmail.com' }
+
+  s.platform            = :ios
+  s.requires_arc        = true
+  s.static_framework    = true
+
+  s.source              = { :path => '.' }
+  s.source_files        = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
+
+  s.default_subspec     = 'https'
+
+  s.dependency          'Flutter'
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
+
+  s.subspec 'min' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-min', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'min-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-min', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'min-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-min-gpl', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'min-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-min-gpl', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'https' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-https', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'https-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-https', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'https-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-https-gpl', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'https-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-https-gpl', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'audio' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-audio', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'audio-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-audio', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'video' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-video', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'video-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-video', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'full' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-full', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'full-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-full', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+  s.subspec 'full-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-full-gpl', "4.5"
+    ss.ios.deployment_target = '12.1'
+  end
+
+  s.subspec 'full-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-ios-full-gpl', "4.5.LTS"
+    ss.ios.deployment_target = '9.3'
+  end
+
+end

flutter/flutter/lib/abstract_session.dart

@@ -0,0 +1,434 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'execute_callback.dart';
+import 'ffmpeg_kit_config.dart';
+import 'ffmpeg_session.dart';
+import 'ffprobe_session.dart';
+import 'log.dart';
+import 'log_callback.dart';
+import 'log_redirection_strategy.dart';
+import 'media_information.dart';
+import 'media_information_session.dart';
+import 'return_code.dart';
+import 'session.dart';
+import 'session_state.dart';
+import 'src/ffmpeg_kit_factory.dart';
+
+/// Abstract session implementation which includes common features shared by
+/// "FFmpeg" and "FFprobe" sessions.
+class AbstractSession extends Session {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Defines how long default "getAll" methods wait, in milliseconds.
+  static const defaultTimeoutForAsynchronousMessagesInTransmit = 5000;
+
+  /// Session identifier.
+  int? _sessionId;
+
+  /// Date and time the session was created.
+  DateTime? _createTime;
+
+  /// Date and time the session was started.
+  DateTime? _startTime;
+
+  /// Command string.
+  String? _command;
+
+  /// Command arguments as an array.
+  List<String>? _argumentsArray;
+
+  /// Session specific log redirection strategy.
+  LogRedirectionStrategy? _logRedirectionStrategy;
+
+  /// Creates a new FFmpeg session using [argumentsArray] and
+  /// [logRedirectionStrategy].
+  ///
+  /// Returns FFmpeg session created.
+  static Future<FFmpegSession> createFFmpegSession(List<String> argumentsArray,
+      [LogRedirectionStrategy? logRedirectionStrategy = null]) async {
+    try {
+      await FFmpegKitConfig.init();
+      final Map<dynamic, dynamic>? nativeSession =
+          await _platform.abstractSessionCreateFFmpegSession(argumentsArray);
+
+      final session = new FFmpegSession();
+
+      session._sessionId = nativeSession?["sessionId"];
+      session._createTime =
+          FFmpegKitFactory.validDate(nativeSession?["createTime"]);
+      session._startTime =
+          FFmpegKitFactory.validDate(nativeSession?["startTime"]);
+      session._command = nativeSession?["command"];
+      session._argumentsArray = argumentsArray;
+      session._logRedirectionStrategy =
+          logRedirectionStrategy ?? FFmpegKitConfig.getLogRedirectionStrategy();
+
+      FFmpegKitFactory.setLogRedirectionStrategy(
+          session._sessionId, logRedirectionStrategy);
+
+      return session;
+    } on PlatformException catch (e, stack) {
+      print("Plugin createFFmpegSession error: ${e.message}");
+      return Future.error("createFFmpegSession failed.", stack);
+    }
+  }
+
+  /// Creates a new FFmpeg session from [sessionMap], which includes session
+  /// fields as map keys.
+  ///
+  /// Returns FFmpeg session created.
+  static FFmpegSession createFFmpegSessionFromMap(
+      Map<dynamic, dynamic> sessionMap) {
+    final session = new FFmpegSession();
+
+    session._sessionId = sessionMap["sessionId"];
+    session._createTime = FFmpegKitFactory.validDate(sessionMap["createTime"]);
+    session._startTime = FFmpegKitFactory.validDate(sessionMap["startTime"]);
+    session._command = sessionMap["command"];
+    session._argumentsArray =
+        FFmpegKitConfig.parseArguments(sessionMap["command"]);
+    session._logRedirectionStrategy =
+        FFmpegKitFactory.getLogRedirectionStrategy(session._sessionId);
+
+    return session;
+  }
+
+  /// Creates a new FFprobe session using [argumentsArray] and
+  /// [logRedirectionStrategy].
+  ///
+  /// Returns FFprobe session created.
+  static Future<FFprobeSession> createFFprobeSession(
+      List<String> argumentsArray,
+      [LogRedirectionStrategy? logRedirectionStrategy = null]) async {
+    try {
+      await FFmpegKitConfig.init();
+      final Map<dynamic, dynamic>? nativeSession =
+          await _platform.abstractSessionCreateFFprobeSession(argumentsArray);
+
+      final session = new FFprobeSession();
+
+      session._sessionId = nativeSession?["sessionId"];
+      session._createTime =
+          FFmpegKitFactory.validDate(nativeSession?["createTime"]);
+      session._startTime =
+          FFmpegKitFactory.validDate(nativeSession?["startTime"]);
+      session._command = nativeSession?["command"];
+      session._argumentsArray = argumentsArray;
+      session._logRedirectionStrategy =
+          logRedirectionStrategy ?? FFmpegKitConfig.getLogRedirectionStrategy();
+
+      FFmpegKitFactory.setLogRedirectionStrategy(
+          session._sessionId, logRedirectionStrategy);
+
+      return session;
+    } on PlatformException catch (e, stack) {
+      print("Plugin createFFprobeSession error: ${e.message}");
+      return Future.error("createFFprobeSession failed.", stack);
+    }
+  }
+
+  /// Creates a new FFprobe session from [sessionMap], which includes session
+  /// fields as map keys.
+  ///
+  /// Returns FFprobe session created.
+  static FFprobeSession createFFprobeSessionFromMap(
+      Map<dynamic, dynamic> sessionMap) {
+    final session = new FFprobeSession();
+
+    session._sessionId = sessionMap["sessionId"];
+    session._createTime = FFmpegKitFactory.validDate(sessionMap["createTime"]);
+    session._startTime = FFmpegKitFactory.validDate(sessionMap["startTime"]);
+    session._command = sessionMap["command"];
+    session._argumentsArray =
+        FFmpegKitConfig.parseArguments(sessionMap["command"]);
+    session._logRedirectionStrategy =
+        FFmpegKitFactory.getLogRedirectionStrategy(session._sessionId);
+
+    return session;
+  }
+
+  /// Creates a new MediaInformation session using [argumentsArray].
+  ///
+  /// Returns MediaInformation session created.
+  static Future<MediaInformationSession> createMediaInformationSession(
+      List<String> argumentsArray) async {
+    try {
+      await FFmpegKitConfig.init();
+      final Map<dynamic, dynamic>? nativeSession = await _platform
+          .abstractSessionCreateMediaInformationSession(argumentsArray);
+      final session = new MediaInformationSession();
+
+      session._sessionId = nativeSession?["sessionId"];
+      session._createTime =
+          FFmpegKitFactory.validDate(nativeSession?["createTime"]);
+      session._startTime =
+          FFmpegKitFactory.validDate(nativeSession?["startTime"]);
+      session._command = nativeSession?["command"];
+      session._argumentsArray = argumentsArray;
+      session._logRedirectionStrategy = LogRedirectionStrategy.neverPrintLogs;
+
+      FFmpegKitFactory.setLogRedirectionStrategy(
+          session._sessionId, LogRedirectionStrategy.neverPrintLogs);
+
+      return session;
+    } on PlatformException catch (e, stack) {
+      print("Plugin createMediaInformationSession error: ${e.message}");
+      return Future.error("createMediaInformationSession failed.", stack);
+    }
+  }
+
+  /// Creates a new MediaInformation session from [sessionMap], which includes
+  /// session fields as map keys.
+  ///
+  /// Returns MediaInformation session created.
+  static MediaInformationSession createMediaInformationSessionFromMap(
+      Map<dynamic, dynamic> sessionMap) {
+    final session = new MediaInformationSession();
+
+    session._sessionId = sessionMap["sessionId"];
+    session._createTime = FFmpegKitFactory.validDate(sessionMap["createTime"]);
+    session._startTime = FFmpegKitFactory.validDate(sessionMap["startTime"]);
+    session._command = sessionMap["command"];
+    session._argumentsArray =
+        FFmpegKitConfig.parseArguments(sessionMap["command"]);
+    session._logRedirectionStrategy = LogRedirectionStrategy.neverPrintLogs;
+
+    if (sessionMap.containsKey("mediaInformation")) {
+      session.setMediaInformation(
+          new MediaInformation(sessionMap["mediaInformation"]));
+    }
+
+    return session;
+  }
+
+  /// Returns the session specific execute callback function.
+  ExecuteCallback? getExecuteCallback() =>
+      FFmpegKitFactory.getExecuteCallback(this.getSessionId());
+
+  /// Returns the session specific log callback function.
+  LogCallback? getLogCallback() =>
+      FFmpegKitFactory.getLogCallback(this.getSessionId());
+
+  /// Returns the session identifier.
+  int? getSessionId() => this._sessionId;
+
+  /// Returns session create time.
+  DateTime? getCreateTime() => this._createTime;
+
+  /// Returns session start time.
+  DateTime? getStartTime() => this._startTime;
+
+  /// Returns session end time.
+  Future<DateTime?> getEndTime() async {
+    try {
+      return _platform
+          .abstractSessionGetEndTime(this.getSessionId())
+          .then(FFmpegKitFactory.validDate);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getEndTime error: ${e.message}");
+      return Future.error("getEndTime failed.", stack);
+    }
+  }
+
+  /// Returns time taken to execute this session in milliseconds or zero (0)
+  /// if the session is not over yet.
+  Future<int> getDuration() async {
+    try {
+      return _platform
+          .abstractSessionGetDuration(this.getSessionId())
+          .then((duration) => duration ?? 0);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getDuration error: ${e.message}");
+      return Future.error("getDuration failed.", stack);
+    }
+  }
+
+  /// Returns command arguments as an array.
+  List<String>? getArguments() => this._argumentsArray;
+
+  /// Returns command arguments as a concatenated string.
+  String? getCommand() => this._command;
+
+  /// Returns all log entries generated for this session. If there are
+  /// asynchronous logs that are not delivered yet, this method waits for
+  /// them until [waitTimeout].
+  Future<List<Log>> getAllLogs([int? waitTimeout = null]) async {
+    try {
+      return _platform
+          .abstractSessionGetAllLogs(this.getSessionId(), waitTimeout)
+          .then((allLogs) {
+        if (allLogs == null) {
+          return List.empty();
+        } else {
+          return allLogs
+              .map((dynamic logObject) =>
+                  FFmpegKitFactory.mapToLog(logObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getAllLogs error: ${e.message}");
+      return Future.error("getAllLogs failed.", stack);
+    }
+  }
+
+  /// Returns all log entries delivered for this session. Note that if there
+  /// are asynchronous logs that are not delivered yet, this method
+  /// will not wait for them and will return immediately.
+  Future<List<Log>> getLogs() async {
+    try {
+      return _platform
+          .abstractSessionGetLogs(this.getSessionId())
+          .then((allLogs) {
+        if (allLogs == null) {
+          return List.empty();
+        } else {
+          return allLogs
+              .map((dynamic logObject) =>
+                  FFmpegKitFactory.mapToLog(logObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getLogs error: ${e.message}");
+      return Future.error("getLogs failed.", stack);
+    }
+  }
+
+  /// Returns all log entries generated for this session as a concatenated
+  /// string. If there are asynchronous logs that are not delivered yet,
+  /// this method waits for them until [waitTimeout].
+  Future<String?> getAllLogsAsString([int? waitTimeout = null]) async {
+    try {
+      return _platform.abstractSessionGetAllLogsAsString(
+          this.getSessionId(), waitTimeout);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getAllLogsAsString error: ${e.message}");
+      return Future.error("getAllLogsAsString failed.", stack);
+    }
+  }
+
+  /// Returns all log entries delivered for this session as a concatenated
+  /// string. Note that if there are asynchronous logs that are not
+  /// delivered yet, this method will not wait for them and will return
+  /// immediately.
+  Future<String> getLogsAsString() async {
+    final StringBuffer concatenatedString = new StringBuffer();
+
+    void concatLog(Log log) => concatenatedString.write(log.getMessage());
+
+    final List<Log> logs = await this.getLogs();
+
+    logs.forEach(concatLog);
+
+    return concatenatedString.toString();
+  }
+
+  /// Returns the log output generated while running the session.
+  Future<String?> getOutput() async => this.getAllLogsAsString();
+
+  /// Returns the state of the session.
+  Future<SessionState> getState() async {
+    try {
+      return _platform
+          .abstractSessionGetState(this.getSessionId())
+          .then((state) {
+        switch (state) {
+          case 0:
+            return SessionState.created;
+          case 1:
+            return SessionState.running;
+          case 2:
+            return SessionState.failed;
+          case 3:
+          default:
+            return SessionState.completed;
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getState error: ${e.message}");
+      return Future.error("getState failed.", stack);
+    }
+  }
+
+  /// Returns the return code for this session. Note that return code is only
+  /// set for sessions that end with COMPLETED state. If a session is not
+  /// started, still running or failed then this method returns null.
+  Future<ReturnCode?> getReturnCode() async {
+    try {
+      return _platform
+          .abstractSessionGetReturnCode(this.getSessionId())
+          .then((returnCode) {
+        if (returnCode == null) {
+          return null;
+        } else {
+          return new ReturnCode(returnCode);
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getReturnCode error: ${e.message}");
+      return Future.error("getReturnCode failed.", stack);
+    }
+  }
+
+  /// Returns the stack trace of the exception received while executing this
+  /// session.
+  ///
+  /// The stack trace is only set for sessions that end with FAILED state. For
+  /// sessions that has COMPLETED state this method returns null.
+  Future<String?> getFailStackTrace() async {
+    try {
+      return _platform.abstractSessionGetFailStackTrace(this.getSessionId());
+    } on PlatformException catch (e, stack) {
+      print("Plugin getFailStackTrace error: ${e.message}");
+      return Future.error("getFailStackTrace failed.", stack);
+    }
+  }
+
+  /// Returns session specific log redirection strategy.
+  LogRedirectionStrategy? getLogRedirectionStrategy() =>
+      this._logRedirectionStrategy;
+
+  /// Returns whether there are still asynchronous messages being transmitted
+  /// for this session or not.
+  Future<bool> thereAreAsynchronousMessagesInTransmit() async {
+    try {
+      return _platform.abstractSessionThereAreAsynchronousMessagesInTransmit(
+          this.getSessionId());
+    } on PlatformException catch (e, stack) {
+      print(
+          "Plugin thereAreAsynchronousMessagesInTransmit error: ${e.message}");
+      return Future.error(
+          "thereAreAsynchronousMessagesInTransmit failed.", stack);
+    }
+  }
+
+  /// Returns whether it is an "FFmpeg" session or not.
+  bool isFFmpeg() => false;
+
+  /// Returns whether it is an "FFprobe" session or not.
+  bool isFFprobe() => false;
+
+  /// Cancels running the session.
+  void cancel() {}
+}

flutter/flutter/lib/arch_detect.dart

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'ffmpeg_kit_config.dart';
+
+/// Detects the running architecture.
+class ArchDetect {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Returns architecture name loaded.
+  static Future<String> getArch() async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform.archDetectGetArch();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getArch error: ${e.message}");
+      return Future.error("getArch failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/execute_callback.dart

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'session.dart';
+
+/// Callback function invoked when a session ends running.
+/// Session has either SessionState.completed or SessionState.failed state when
+/// the callback is invoked.
+/// If it has SessionState.completed state, "ReturnCode" should be checked to
+/// see the execution result.
+/// If "getState" returns SessionState.failed then "getFailStackTrace" should
+/// be used to get the failure reason.
+typedef ExecuteCallback = void Function(Session session);

flutter/flutter/lib/ffmpeg_kit.dart

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'execute_callback.dart';
+import 'ffmpeg_kit_config.dart';
+import 'ffmpeg_session.dart';
+import 'log_callback.dart';
+import 'src/ffmpeg_kit_factory.dart';
+import 'statistics_callback.dart';
+
+/// Main class to run "FFmpeg" commands.
+class FFmpegKit {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Asynchronously executes FFmpeg with command provided.
+  static Future<FFmpegSession> executeAsync(String command,
+          [ExecuteCallback? executeCallback = null,
+          LogCallback? logCallback = null,
+          StatisticsCallback? statisticsCallback = null]) async =>
+      FFmpegKit.executeWithArgumentsAsync(
+          FFmpegKitConfig.parseArguments(command),
+          executeCallback,
+          logCallback,
+          statisticsCallback);
+
+  /// Asynchronously executes FFmpeg with arguments provided.
+  static Future<FFmpegSession> executeWithArgumentsAsync(
+      List<String> commandArguments,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null,
+      StatisticsCallback? statisticsCallback = null]) async {
+    final session = await FFmpegSession.create(commandArguments,
+        executeCallback, logCallback, statisticsCallback, null);
+
+    await FFmpegKitConfig.asyncFFmpegExecute(session);
+
+    return session;
+  }
+
+  /// Cancels the session specified with [sessionId].
+  static Future<void> cancel([int? sessionId = null]) async {
+    try {
+      await FFmpegKitConfig.init();
+      if (sessionId == null) {
+        return _platform.ffmpegKitCancel();
+      } else {
+        return _platform.ffmpegKitCancelSession(sessionId);
+      }
+    } on PlatformException catch (e, stack) {
+      print("Plugin cancel error: ${e.message}");
+      return Future.error("cancel failed.", stack);
+    }
+  }
+
+  /// Lists all FFmpeg sessions in the session history.
+  static Future<List<FFmpegSession>> listSessions() async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform.ffmpegKitListSessions().then((sessions) {
+        if (sessions == null) {
+          return List.empty();
+        } else {
+          return sessions
+              .map((dynamic sessionObject) => FFmpegKitFactory.mapToSession(
+                  sessionObject as Map<dynamic, dynamic>))
+              .map((session) => session as FFmpegSession)
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin listSessions error: ${e.message}");
+      return Future.error("listSessions failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/ffmpeg_kit_config.dart

@@ -0,0 +1,650 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'execute_callback.dart';
+import 'ffmpeg_session.dart';
+import 'ffprobe_session.dart';
+import 'level.dart';
+import 'log_callback.dart';
+import 'log_redirection_strategy.dart';
+import 'media_information_session.dart';
+import 'session.dart';
+import 'session_state.dart';
+import 'signal.dart';
+import 'src/ffmpeg_kit_factory.dart';
+import 'src/ffmpeg_kit_flutter_initializer.dart';
+import 'statistics_callback.dart';
+
+/// Configuration class of "FFmpegKit" library.
+class FFmpegKitConfig {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  static LogRedirectionStrategy _globalLogRedirectionStrategy =
+      LogRedirectionStrategy.printLogsWhenNoCallbacksDefined;
+
+  static int _activeLogLevel = Level.avLogTrace;
+
+  /// Initializes the library asynchronously.
+  static Future<void> init() async {
+    await FFmpegKitInitializer.initialize();
+  }
+
+  /// Enables log and statistics redirection.
+  ///
+  /// When redirection is enabled FFmpeg/FFprobe logs are redirected to console
+  /// and sessions collect log and statistics entries for the executions. It
+  /// is possible to define global or session specific log/statistics callbacks
+  /// as well.
+  ///
+  /// Note that redirection is enabled by default. If you do not want to use
+  /// its functionality please use [disableRedirection] to disable it.
+  static Future<void> enableRedirection() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigEnableRedirection();
+    } on PlatformException catch (e, stack) {
+      print("Plugin enableRedirection error: ${e.message}");
+      return Future.error("enableRedirection failed.", stack);
+    }
+  }
+
+  /// Disables log and statistics redirection.
+  ///
+  /// When redirection is disabled logs are printed to stderr, all logs and
+  /// statistics callbacks are disabled and "FFprobeKit.getMediaInformation"
+  /// methods do not work.
+  static Future<void> disableRedirection() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigDisableRedirection();
+    } on PlatformException catch (e, stack) {
+      print("Plugin disableRedirection error: ${e.message}");
+      return Future.error("disableRedirection failed.", stack);
+    }
+  }
+
+  /// Sets and overrides "fontconfig" configuration directory.
+  static Future<void> setFontconfigConfigurationPath(String path) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetFontconfigConfigurationPath(path);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setFontconfigConfigurationPath error: ${e.message}");
+      return Future.error("setFontconfigConfigurationPath failed.", stack);
+    }
+  }
+
+  /// Registers the fonts inside the given path, so they become available to
+  /// use in FFmpeg filters.
+  ///
+  /// Note that you need to use a package with "fontconfig" inside to be able
+  /// to use fonts in "FFmpeg".
+  static Future<void> setFontDirectory(String path,
+      [Map<String, String>? mapping = null]) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetFontDirectory(path, mapping);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setFontDirectory error: ${e.message}");
+      return Future.error("setFontDirectory failed.", stack);
+    }
+  }
+
+  /// Registers the fonts inside the given list of font directories, so they
+  /// become available to use in FFmpeg filters.
+  ///
+  /// Note that you need to use a package with "fontconfig" inside to be able
+  /// to use fonts in "FFmpeg".
+  static Future<void> setFontDirectoryList(List<String> fontDirectoryList,
+      [Map<String, String>? mapping = null]) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetFontDirectoryList(
+          fontDirectoryList, mapping);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setFontDirectoryList error: ${e.message}");
+      return Future.error("setFontDirectoryList failed.", stack);
+    }
+  }
+
+  /// Creates a new named pipe to use in "FFmpeg" operations.
+  ///
+  /// Please note that creator is responsible of closing created pipes.
+  static Future<String?> registerNewFFmpegPipe() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigRegisterNewFFmpegPipe();
+    } on PlatformException catch (e, stack) {
+      print("Plugin registerNewFFmpegPipe error: ${e.message}");
+      return Future.error("registerNewFFmpegPipe failed.", stack);
+    }
+  }
+
+  /// Closes a previously created "FFmpeg" pipe.
+  static Future<void> closeFFmpegPipe(String ffmpegPipePath) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigCloseFFmpegPipe(ffmpegPipePath);
+    } on PlatformException catch (e, stack) {
+      print("Plugin closeFFmpegPipe error: ${e.message}");
+      return Future.error("closeFFmpegPipe failed.", stack);
+    }
+  }
+
+  /// Returns the version of FFmpeg bundled within "FFmpegKit" library.
+  static Future<String?> getFFmpegVersion() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetFFmpegVersion();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getFFmpegVersion error: ${e.message}");
+      return Future.error("getFFmpegVersion failed.", stack);
+    }
+  }
+
+  /// Returns FFmpegKit Flutter library version.
+  static Future<String> getVersion() async => FFmpegKitFactory.getVersion();
+
+  /// Returns whether FFmpegKit release is a Long Term Release or not.
+  static Future<bool> isLTSBuild() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigIsLTSBuild().then((value) {
+        if (value == null) {
+          return false;
+        } else {
+          return value;
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin isLTSBuild error: ${e.message}");
+      return Future.error("isLTSBuild failed.", stack);
+    }
+  }
+
+  /// Returns FFmpegKit native library build date.
+  static Future<String?> getBuildDate() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetBuildDate();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getBuildDate error: ${e.message}");
+      return Future.error("getBuildDate failed.", stack);
+    }
+  }
+
+  /// Sets an environment variable.
+  static Future<void> setEnvironmentVariable(String name, String value) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetEnvironmentVariable(name, value);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setEnvironmentVariable error: ${e.message}");
+      return Future.error("setEnvironmentVariable failed.", stack);
+    }
+  }
+
+  /// Registers a new ignored signal. Ignored signals are not handled by
+  /// "FFmpegKit" library.
+  static Future<void> ignoreSignal(Signal signal) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigIgnoreSignal(signal.index);
+    } on PlatformException catch (e, stack) {
+      print("Plugin ignoreSignal error: ${e.message}");
+      return Future.error("ignoreSignal failed.", stack);
+    }
+  }
+
+  /// Asynchronously executes the [ffmpegSession] provided.
+  static Future<void> asyncFFmpegExecute(FFmpegSession ffmpegSession) async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigAsyncFFmpegExecute(ffmpegSession.getSessionId());
+    } on PlatformException catch (e, stack) {
+      print("Plugin asyncFFmpegExecute error: ${e.message}");
+      return Future.error("asyncFFmpegExecute failed.", stack);
+    }
+  }
+
+  /// Asynchronously executes the [ffprobeSession] provided.
+  static Future<void> asyncFFprobeExecute(FFprobeSession ffprobeSession) async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigAsyncFFprobeExecute(ffprobeSession.getSessionId());
+    } on PlatformException catch (e, stack) {
+      print("Plugin asyncFFprobeExecute error: ${e.message}");
+      return Future.error("asyncFFprobeExecute failed.", stack);
+    }
+  }
+
+  /// Asynchronously executes the [mediaInformationSession] provided.
+  static Future<void> asyncGetMediaInformationExecute(
+      MediaInformationSession mediaInformationSession,
+      [int? waitTimeout = null]) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigAsyncGetMediaInformationExecute(
+          mediaInformationSession.getSessionId(), waitTimeout);
+    } on PlatformException catch (e, stack) {
+      print("Plugin asyncGetMediaInformationExecute error: ${e.message}");
+      return Future.error("asyncGetMediaInformationExecute failed.", stack);
+    }
+  }
+
+  /// Sets a global callback function to redirect FFmpeg/FFprobe logs.
+  static void enableLogCallback([LogCallback? logCallback = null]) {
+    FFmpegKitFactory.setGlobalLogCallback(logCallback);
+  }
+
+  /// Sets a global callback function to redirect FFmpeg statistics.
+  static void enableStatisticsCallback(
+      [StatisticsCallback? statisticsCallback = null]) {
+    FFmpegKitFactory.setGlobalStatisticsCallback(statisticsCallback);
+  }
+
+  /// Sets a global callback function to receive execution results.
+  static void enableExecuteCallback([ExecuteCallback? executeCallback = null]) {
+    FFmpegKitFactory.setGlobalExecuteCallback(executeCallback);
+  }
+
+  /// Returns the current log level.
+  static int getLogLevel() => _activeLogLevel;
+
+  /// Sets the log level.
+  static Future<void> setLogLevel(int logLevel) async {
+    _activeLogLevel = logLevel;
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetLogLevel(logLevel);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setLogLevel error: ${e.message}");
+      return Future.error("setLogLevel failed.", stack);
+    }
+  }
+
+  /// Returns the session history size.
+  static Future<int?> getSessionHistorySize() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetSessionHistorySize();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSessionHistorySize error: ${e.message}");
+      return Future.error("getSessionHistorySize failed.", stack);
+    }
+  }
+
+  /// Sets the session history size.
+  static Future<void> setSessionHistorySize(int sessionHistorySize) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSetSessionHistorySize(sessionHistorySize);
+    } on PlatformException catch (e, stack) {
+      print("Plugin setSessionHistorySize error: ${e.message}");
+      return Future.error("setSessionHistorySize failed.", stack);
+    }
+  }
+
+  /// Returns the session specified with "sessionId" from the session history.
+  static Future<Session?> getSession(int sessionId) async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigGetSession(sessionId)
+          .then(FFmpegKitFactory.mapToNullableSession);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSession error: ${e.message}");
+      return Future.error("getSession failed.", stack);
+    }
+  }
+
+  /// Returns the last session created from the session history.
+  static Future<Session?> getLastSession() async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigGetLastSession()
+          .then(FFmpegKitFactory.mapToNullableSession);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getLastSession error: ${e.message}");
+      return Future.error("getLastSession failed.", stack);
+    }
+  }
+
+  /// Returns the last session completed from the session history.
+  static Future<Session?> getLastCompletedSession() async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigGetLastCompletedSession()
+          .then(FFmpegKitFactory.mapToNullableSession);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getLastCompletedSession error: ${e.message}");
+      return Future.error("getLastCompletedSession failed.", stack);
+    }
+  }
+
+  /// Returns all sessions in the session history.
+  static Future<List<Session>> getSessions() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetSessions().then((sessions) {
+        if (sessions == null) {
+          return List.empty();
+        } else {
+          return sessions
+              .map((dynamic sessionObject) => FFmpegKitFactory.mapToSession(
+                  sessionObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSessions error: ${e.message}");
+      return Future.error("getSessions failed.", stack);
+    }
+  }
+
+  /// Clears all, including ongoing, sessions in the session history.
+  /// Note that callbacks cannot be triggered for deleted sessions.
+  static Future<void> clearSessions() async {
+    try {
+      await init();
+      return _platform.clearSessions();
+    } on PlatformException catch (e, stack) {
+      print("Plugin clearSessions error: ${e.message}");
+      return Future.error("clearSessions failed.", stack);
+    }
+  }
+
+  /// Returns sessions that have [sessionState].
+  static Future<List<Session>> getSessionsByState(
+      SessionState sessionState) async {
+    try {
+      await init();
+      return _platform
+          .ffmpegKitConfigGetSessionsByState(sessionState.index)
+          .then((sessions) {
+        if (sessions == null) {
+          return List.empty();
+        } else {
+          return sessions
+              .map((dynamic sessionObject) => FFmpegKitFactory.mapToSession(
+                  sessionObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSessionsByState error: ${e.message}");
+      return Future.error("getSessionsByState failed.", stack);
+    }
+  }
+
+  /// Returns the active log redirection strategy.
+  static LogRedirectionStrategy getLogRedirectionStrategy() =>
+      _globalLogRedirectionStrategy;
+
+  /// Sets the log redirection strategy.
+  static void setLogRedirectionStrategy(
+      LogRedirectionStrategy logRedirectionStrategy) {
+    _globalLogRedirectionStrategy = logRedirectionStrategy;
+  }
+
+  /// Returns the number of messages that are not transmitted to the
+  /// Flutter callbacks yet for this session.
+  static Future<int?> messagesInTransmit(int sessionId) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigMessagesInTransmit(sessionId);
+    } on PlatformException catch (e, stack) {
+      print("Plugin messagesInTransmit error: ${e.message}");
+      return Future.error("messagesInTransmit failed.", stack);
+    }
+  }
+
+  /// Returns the string representation of the SessionState provided.
+  static String sessionStateToString(SessionState state) {
+    switch (state) {
+      case SessionState.created:
+        return "CREATED";
+      case SessionState.running:
+        return "RUNNING";
+      case SessionState.failed:
+        return "FAILED";
+      case SessionState.completed:
+        return "COMPLETED";
+      default:
+        return "";
+    }
+  }
+
+  /// Parses [command] into arguments. Uses space character to split the
+  /// arguments. Supports single and double quote characters.
+  static List<String> parseArguments(String command) {
+    final List<String> argumentList = List<String>.empty(growable: true);
+    StringBuffer currentArgument = new StringBuffer();
+
+    bool singleQuoteStarted = false;
+    bool doubleQuoteStarted = false;
+
+    for (int i = 0; i < command.length; i++) {
+      int? previousChar;
+      if (i > 0) {
+        previousChar = command.codeUnitAt(i - 1);
+      } else {
+        previousChar = null;
+      }
+      final currentChar = command.codeUnitAt(i);
+
+      if (currentChar == ' '.codeUnitAt(0)) {
+        if (singleQuoteStarted || doubleQuoteStarted) {
+          currentArgument.write(String.fromCharCode(currentChar));
+        } else if (currentArgument.length > 0) {
+          argumentList.add(currentArgument.toString());
+          currentArgument = new StringBuffer();
+        }
+      } else if (currentChar == '\''.codeUnitAt(0) &&
+          (previousChar == null || previousChar != '\\'.codeUnitAt(0))) {
+        if (singleQuoteStarted) {
+          singleQuoteStarted = false;
+        } else if (doubleQuoteStarted) {
+          currentArgument.write(String.fromCharCode(currentChar));
+        } else {
+          singleQuoteStarted = true;
+        }
+      } else if (currentChar == '\"'.codeUnitAt(0) &&
+          (previousChar == null || previousChar != '\\'.codeUnitAt(0))) {
+        if (doubleQuoteStarted) {
+          doubleQuoteStarted = false;
+        } else if (singleQuoteStarted) {
+          currentArgument.write(String.fromCharCode(currentChar));
+        } else {
+          doubleQuoteStarted = true;
+        }
+      } else {
+        currentArgument.write(String.fromCharCode(currentChar));
+      }
+    }
+
+    if (currentArgument.length > 0) {
+      argumentList.add(currentArgument.toString());
+    }
+
+    return argumentList;
+  }
+
+  /// Concatenates arguments into a string adding a space character between
+  /// two arguments.
+  static String argumentsToString(List<String>? arguments) {
+    if (arguments == null) {
+      return "null";
+    }
+
+    final StringBuffer stringBuffer = new StringBuffer();
+    for (int i = 0; i < arguments.length; i++) {
+      if (i > 0) {
+        stringBuffer.write(" ");
+      }
+      stringBuffer.write(arguments[i]);
+    }
+
+    return stringBuffer.toString();
+  }
+
+  // THE FOLLOWING METHODS ARE FLUTTER SPECIFIC
+
+  /// Enables logs.
+  static Future<void> enableLogs() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigEnableLogs();
+    } on PlatformException catch (e, stack) {
+      print("Plugin enableLogs error: ${e.message}");
+      return Future.error("enableLogs failed.", stack);
+    }
+  }
+
+  /// Disable logs.
+  static Future<void> disableLogs() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigDisableLogs();
+    } on PlatformException catch (e, stack) {
+      print("Plugin disableLogs error: ${e.message}");
+      return Future.error("disableLogs failed.", stack);
+    }
+  }
+
+  /// Enables statistics.
+  static Future<void> enableStatistics() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigEnableStatistics();
+    } on PlatformException catch (e, stack) {
+      print("Plugin enableStatistics error: ${e.message}");
+      return Future.error("enableStatistics failed.", stack);
+    }
+  }
+
+  /// Disables statistics.
+  static Future<void> disableStatistics() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigDisableStatistics();
+    } on PlatformException catch (e, stack) {
+      print("Plugin disableStatistics error: ${e.message}");
+      return Future.error("disableStatistics failed.", stack);
+    }
+  }
+
+  /// Returns the platform name the library is loaded on.
+  static Future<String?> getPlatform() async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetPlatform();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getPlatform error: ${e.message}");
+      return Future.error("getPlatform failed.", stack);
+    }
+  }
+
+  /// Writes [inputPath] to [pipePath].
+  static Future<int?> writeToPipe(String inputPath, String pipePath) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigWriteToPipe(inputPath, pipePath);
+    } on PlatformException catch (e, stack) {
+      print("Plugin writeToPipe error: ${e.message}");
+      return Future.error("writeToPipe failed.", stack);
+    }
+  }
+
+  /// Displays the native file dialog to select a file in read mode. If a file
+  /// is selected then this method returns the Structured Access Framework Uri
+  /// ("content:…") for that file.
+  ///
+  /// Note that this method is Android only. It will fail if called on other
+  /// platforms.
+  static Future<String?> selectDocumentForRead(
+      [String? type = null, List<String>? extraTypes = null]) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSelectDocumentForRead(type, extraTypes);
+    } on PlatformException catch (e, stack) {
+      print("Plugin selectDocumentForRead error: ${e.message}");
+      return Future.error("selectDocumentForRead failed.", stack);
+    }
+  }
+
+  /// Displays the native file dialog to select a file in write mode. If a file
+  /// is selected then this method returns the Structured Access Framework Uri
+  /// ("content:…") for that file.
+  ///
+  /// Note that this method is Android only. It will fail if called on other
+  /// platforms.
+  static Future<String?> selectDocumentForWrite(
+      [String? title = null,
+      String? type = null,
+      List<String>? extraTypes = null]) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigSelectDocumentForWrite(
+          title, type, extraTypes);
+    } on PlatformException catch (e, stack) {
+      print("Plugin selectDocumentForWrite error: ${e.message}");
+      return Future.error("selectDocumentForWrite failed.", stack);
+    }
+  }
+
+  /// Converts the given Structured Access Framework Uri ("content:…") into
+  /// an input url that can be used in FFmpeg and FFprobe commands.
+  ///
+  /// Note that this method is Android only. It will fail if called on other
+  /// platforms. It also requires API Level &ge; 19. On older API levels it
+  /// returns an empty url.
+  static Future<String?> getSafParameterForRead(String uriString) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetSafParameterForRead(uriString);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSafParameterForRead error: ${e.message}");
+      return Future.error("getSafParameterForRead failed.", stack);
+    }
+  }
+
+  /// Converts the given Structured Access Framework Uri ("content:…") into
+  /// an output url that can be used in FFmpeg and FFprobe commands.
+  ///
+  /// Note that this method is Android only. It will fail if called on other
+  /// platforms. It also requires API Level &ge; 19. On older API levels it
+  /// returns an empty url.
+  static Future<String?> getSafParameterForWrite(String uriString) async {
+    try {
+      await init();
+      return _platform.ffmpegKitConfigGetSafParameterForWrite(uriString);
+    } on PlatformException catch (e, stack) {
+      print("Plugin getSafParameterForWrite error: ${e.message}");
+      return Future.error("getSafParameterForWrite failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/ffmpeg_session.dart

@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'abstract_session.dart';
+import 'execute_callback.dart';
+import 'ffmpeg_kit_config.dart';
+import 'log_callback.dart';
+import 'log_redirection_strategy.dart';
+import 'src/ffmpeg_kit_factory.dart';
+import 'statistics.dart';
+import 'statistics_callback.dart';
+
+/// An FFmpeg session.
+class FFmpegSession extends AbstractSession {
+  /// Creates a new FFmpeg session with [argumentsArray].
+  static Future<FFmpegSession> create(List<String> argumentsArray,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null,
+      StatisticsCallback? statisticsCallback = null,
+      LogRedirectionStrategy? logRedirectionStrategy = null]) async {
+    final session = await AbstractSession.createFFmpegSession(
+        argumentsArray, logRedirectionStrategy);
+    final sessionId = session.getSessionId();
+
+    FFmpegKitFactory.setExecuteCallback(sessionId, executeCallback);
+    FFmpegKitFactory.setLogCallback(sessionId, logCallback);
+    FFmpegKitFactory.setStatisticsCallback(sessionId, statisticsCallback);
+
+    return session;
+  }
+
+  /// Creates a new FFmpeg session from [sessionMap], which includes session
+  /// fields as map keys.
+  static FFmpegSession fromMap(Map<dynamic, dynamic> sessionMap) =>
+      AbstractSession.createFFmpegSessionFromMap(sessionMap);
+
+  /// Returns the session specific statistics callback function.
+  StatisticsCallback? getStatisticsCallback() =>
+      FFmpegKitFactory.getStatisticsCallback(this.getSessionId());
+
+  /// Returns all statistics entries generated for this session. If there are
+  /// asynchronous statistics that are not delivered yet, this method waits for
+  /// them until [waitTimeout].
+  Future<List<Statistics>> getAllStatistics([int? waitTimeout]) async {
+    try {
+      await FFmpegKitConfig.init();
+      return FFmpegKitPlatform.instance
+          .ffmpegSessionGetAllStatistics(this.getSessionId(), waitTimeout)
+          .then((allStatistics) {
+        if (allStatistics == null) {
+          return List.empty();
+        } else {
+          return allStatistics
+              .map((dynamic statisticsObject) =>
+                  FFmpegKitFactory.mapToStatistics(
+                      statisticsObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getAllStatistics error: ${e.message}");
+      return Future.error("getAllStatistics failed.", stack);
+    }
+  }
+
+  /// Returns all statistics entries delivered for this session. Note that if
+  /// there are asynchronous statistics that are not delivered yet, this method
+  /// will not wait for them and will return immediately.
+  Future<List<Statistics>> getStatistics() async {
+    try {
+      await FFmpegKitConfig.init();
+      return FFmpegKitPlatform.instance
+          .ffmpegSessionGetStatistics(this.getSessionId())
+          .then((statistics) {
+        if (statistics == null) {
+          return List.empty();
+        } else {
+          return statistics
+              .map((dynamic statisticsObject) =>
+                  FFmpegKitFactory.mapToStatistics(
+                      statisticsObject as Map<dynamic, dynamic>))
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getStatistics error: ${e.message}");
+      return Future.error("getStatistics failed.", stack);
+    }
+  }
+
+  /// Returns the last received statistics entry.
+  Future<Statistics?> getLastReceivedStatistics() async =>
+      this.getStatistics().then((statistics) {
+        if (statistics.length > 0) {
+          return statistics[statistics.length - 1];
+        } else {
+          return null;
+        }
+      });
+
+  bool isFFmpeg() => true;
+
+  bool isFFprobe() => false;
+}

flutter/flutter/lib/ffprobe_kit.dart

@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'execute_callback.dart';
+import 'ffmpeg_kit_config.dart';
+import 'ffprobe_session.dart';
+import 'log_callback.dart';
+import 'media_information_session.dart';
+import 'src/ffmpeg_kit_factory.dart';
+
+/// Main class to run "FFprobe" commands.
+class FFprobeKit {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Asynchronously executes FFprobe with [command] provided.
+  static Future<FFprobeSession> executeAsync(String command,
+          [ExecuteCallback? executeCallback = null,
+          LogCallback? logCallback = null]) async =>
+      FFprobeKit.executeWithArgumentsAsync(
+          FFmpegKitConfig.parseArguments(command),
+          executeCallback,
+          logCallback);
+
+  /// Asynchronously executes FFprobe with [commandArguments] provided.
+  static Future<FFprobeSession> executeWithArgumentsAsync(
+      List<String> commandArguments,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null]) async {
+    final session = await FFprobeSession.create(
+        commandArguments, executeCallback, logCallback, null);
+
+    await FFmpegKitConfig.asyncFFprobeExecute(session);
+
+    return session;
+  }
+
+  /// Extracts the media information for the file at [path] asynchronously.
+  static Future<MediaInformationSession> getMediaInformationAsync(String path,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null,
+      int? waitTimeout = null]) async {
+    final commandArguments = [
+      "-v",
+      "error",
+      "-hide_banner",
+      "-print_format",
+      "json",
+      "-show_format",
+      "-show_streams",
+      "-i",
+      path
+    ];
+    return FFprobeKit.getMediaInformationFromCommandArgumentsAsync(
+        commandArguments, executeCallback, logCallback, waitTimeout);
+  }
+
+  /// Extracts media information using the [command] provided asynchronously.
+  static Future<MediaInformationSession> getMediaInformationFromCommandAsync(
+          String command,
+          [ExecuteCallback? executeCallback = null,
+          LogCallback? logCallback = null,
+          int? waitTimeout = null]) async =>
+      FFprobeKit.getMediaInformationFromCommandArgumentsAsync(
+          FFmpegKitConfig.parseArguments(command),
+          executeCallback,
+          logCallback,
+          waitTimeout);
+
+  /// Extracts media information using the [commandArguments] provided
+  /// asynchronously.
+  static Future<MediaInformationSession>
+      getMediaInformationFromCommandArgumentsAsync(
+          List<String> commandArguments,
+          [ExecuteCallback? executeCallback = null,
+          LogCallback? logCallback = null,
+          int? waitTimeout = null]) async {
+    final session = await MediaInformationSession.create(
+        commandArguments, executeCallback, logCallback);
+
+    await FFmpegKitConfig.asyncGetMediaInformationExecute(session, waitTimeout);
+
+    return session;
+  }
+
+  /// Lists all FFprobe sessions in the session history.
+  static Future<List<FFprobeSession>> listSessions() async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform.ffprobeKitListSessions().then((sessions) {
+        if (sessions == null) {
+          return List.empty();
+        } else {
+          return sessions
+              .map((dynamic sessionObject) => FFmpegKitFactory.mapToSession(
+                  sessionObject as Map<dynamic, dynamic>))
+              .map((session) => session as FFprobeSession)
+              .toList();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin listSessions error: ${e.message}");
+      return Future.error("listSessions failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/ffprobe_session.dart

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'abstract_session.dart';
+import 'execute_callback.dart';
+import 'log_callback.dart';
+import 'log_redirection_strategy.dart';
+import 'src/ffmpeg_kit_factory.dart';
+
+/// An FFprobe session.
+class FFprobeSession extends AbstractSession {
+  /// Creates a new FFprobe session with [argumentsArray].
+  static Future<FFprobeSession> create(List<String> argumentsArray,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null,
+      LogRedirectionStrategy? logRedirectionStrategy = null]) async {
+    final session = await AbstractSession.createFFprobeSession(
+        argumentsArray, logRedirectionStrategy);
+    final sessionId = session.getSessionId();
+
+    FFmpegKitFactory.setExecuteCallback(sessionId, executeCallback);
+    FFmpegKitFactory.setLogCallback(sessionId, logCallback);
+
+    return session;
+  }
+
+  /// Creates a new FFprobe session from [sessionMap], which includes session
+  /// fields as map keys.
+  static FFprobeSession fromMap(Map<dynamic, dynamic> sessionMap) =>
+      AbstractSession.createFFprobeSessionFromMap(sessionMap);
+
+  bool isFFmpeg() => false;
+
+  bool isFFprobe() => true;
+}

flutter/flutter/lib/level.dart

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Defines log levels.
+class Level {
+  /// This log level is defined by FFmpegKit. It is used to specify logs
+  /// printed to stderr by FFmpeg. Logs that has this level are not filtered
+  /// and always redirected.
+  static const int avLogStderr = -16;
+
+  /// Print no output.
+  static const int avLogQuiet = -8;
+
+  /// Something went really wrong and we will crash now.
+  static const int avLogPanic = 0;
+
+  /// Something went wrong and recovery is not possible.
+  /// For example, no header was found for a format which depends
+  /// on headers or an illegal combination of parameters is used.
+  static const int avLogFatal = 8;
+
+  /// Something went wrong and cannot losslessly be recovered.
+  /// However, not all future data is affected.
+  static const int avLogError = 16;
+
+  /// Something somehow does not look correct. This may or may not
+  /// lead to problems. An example would be the use of '-vstrict -2'.
+  static const int avLogWarning = 24;
+
+  /// int Standard information.
+  static const int avLogInfo = 32;
+
+  /// Detailed information.
+  static const int avLogVerbose = 40;
+
+  /// Stuff which is only useful for libav* developers.
+  static const int avLogDebug = 48;
+
+  /// Extremely verbose debugging, useful for libav* development.
+  static const int avLogTrace = 56;
+
+  /// Returns log level string from int
+  static String levelToString(int level) {
+    switch (level) {
+      case Level.avLogTrace:
+        return "TRACE";
+      case Level.avLogDebug:
+        return "DEBUG";
+      case Level.avLogVerbose:
+        return "VERBOSE";
+      case Level.avLogInfo:
+        return "INFO";
+      case Level.avLogWarning:
+        return "WARNING";
+      case Level.avLogError:
+        return "ERROR";
+      case Level.avLogFatal:
+        return "FATAL";
+      case Level.avLogPanic:
+        return "PANIC";
+      case Level.avLogStderr:
+        return "STDERR";
+      case Level.avLogQuiet:
+      default:
+        return "";
+    }
+  }
+}

flutter/flutter/lib/log.dart

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Log entry for an FFmpegKit session.
+class Log {
+  int _sessionId;
+  int _level;
+  String _message;
+
+  Log(this._sessionId, this._level, this._message);
+
+  int getSessionId() => _sessionId;
+
+  int getLevel() => _level;
+
+  String getMessage() => _message;
+}

flutter/flutter/lib/log_callback.dart

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'log.dart';
+
+/// Callback function that receives logs generated for "FFmpegKit" sessions.
+typedef LogCallback = void Function(Log log);

flutter/flutter/lib/log_redirection_strategy.dart

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+enum LogRedirectionStrategy {
+  alwaysPrintLogs,
+  printLogsWhenNoCallbacksDefined,
+  printLogsWhenGlobalCallbackNotDefined,
+  printLogsWhenSessionCallbackNotDefined,
+  neverPrintLogs
+}

flutter/flutter/lib/media_information.dart

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'stream_information.dart';
+
+/// Media information class.
+class MediaInformation {
+  static const keyMediaProperties = "format";
+  static const keyFilename = "filename";
+  static const keyFormat = "format_name";
+  static const keyFormatLong = "format_long_name";
+  static const keyStartTime = "start_time";
+  static const keyDuration = "duration";
+  static const keySize = "size";
+  static const keyBitRate = "bit_rate";
+  static const keyTags = "tags";
+
+  Map<dynamic, dynamic>? _allProperties;
+
+  /// Creates a new [MediaInformation] instance
+  MediaInformation(this._allProperties);
+
+  /// Returns file name.
+  String? getFilename() => this.getStringProperty(MediaInformation.keyFilename);
+
+  /// Returns format.
+  String? getFormat() => this.getStringProperty(MediaInformation.keyFormat);
+
+  /// Returns long format.
+  String? getLongFormat() =>
+      this.getStringProperty(MediaInformation.keyFormatLong);
+
+  /// Returns duration.
+  String? getDuration() => this.getStringProperty(MediaInformation.keyDuration);
+
+  /// Returns start time.
+  String? getStartTime() =>
+      this.getStringProperty(MediaInformation.keyStartTime);
+
+  /// Returns size.
+  String? getSize() => this.getStringProperty(MediaInformation.keySize);
+
+  /// Returns bitrate.
+  String? getBitrate() => this.getStringProperty(MediaInformation.keyBitRate);
+
+  /// Returns all tags.
+  Map<dynamic, dynamic>? getTags() =>
+      this.getProperties(StreamInformation.keyTags);
+
+  /// Returns the media property associated with the key.
+  String? getStringProperty(String key) => this.getMediaProperties()?[key];
+
+  /// Returns the media property associated with the key.
+  num? getNumberProperty(String key) => this.getMediaProperties()?[key];
+
+  /// Returns the media properties associated with the key.
+  dynamic getProperties(String key) => this.getMediaProperties()?[key];
+
+  /// Returns all streams found as a list.
+  List<StreamInformation> getStreams() {
+    final List<StreamInformation> list =
+        List<StreamInformation>.empty(growable: true);
+
+    dynamic createStreamInformation(Map<dynamic, dynamic> streamProperties) =>
+        list.add(new StreamInformation(streamProperties));
+
+    this._allProperties?["streams"]?.forEach((Object? stream) {
+      createStreamInformation(stream as Map<dynamic, dynamic>);
+    });
+
+    return list;
+  }
+
+  /// Returns all media properties.
+  Map<dynamic, dynamic>? getMediaProperties() =>
+      this._allProperties?[keyMediaProperties];
+
+  /// Returns all properties found, including stream properties.
+  Map<dynamic, dynamic>? getAllProperties() => this._allProperties;
+}

flutter/flutter/lib/media_information_json_parser.dart

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'ffmpeg_kit_config.dart';
+import 'media_information.dart';
+
+/// A parser that constructs "MediaInformation" from FFprobe's json output.
+class MediaInformationJsonParser {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Extracts MediaInformation from the given FFprobe json output. Note that
+  /// this method does not fail as [fromWithError] does and returns null on
+  /// error.
+  static Future<MediaInformation?> from(String ffprobeJsonOutput) async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform
+          .mediaInformationJsonParserFrom(ffprobeJsonOutput)
+          .then((properties) {
+        if (properties == null || properties.length == 0) {
+          return null;
+        } else {
+          return new MediaInformation(properties);
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin from error: ${e.message}");
+      return Future.error("from failed.", stack);
+    }
+  }
+
+  /// Extracts MediaInformation from the given FFprobe json output.
+  static Future<MediaInformation> fromWithError(
+      String ffprobeJsonOutput) async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform
+          .mediaInformationJsonParserFromWithError(ffprobeJsonOutput)
+          .then((properties) => new MediaInformation(properties));
+    } on PlatformException catch (e, stack) {
+      print("Plugin fromWithError error: ${e.message}");
+      return Future.error("fromWithError failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/media_information_session.dart

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'abstract_session.dart';
+import 'execute_callback.dart';
+import 'ffprobe_session.dart';
+import 'log_callback.dart';
+import 'media_information.dart';
+import 'src/ffmpeg_kit_factory.dart';
+
+/// A custom FFprobe session, which produces a "MediaInformation" object
+/// using the FFprobe output.
+class MediaInformationSession extends FFprobeSession {
+  MediaInformation? _mediaInformation;
+
+  /// Creates a new MediaInformation session with [argumentsArray].
+  static Future<MediaInformationSession> create(List<String> argumentsArray,
+      [ExecuteCallback? executeCallback = null,
+      LogCallback? logCallback = null]) async {
+    final session =
+        await AbstractSession.createMediaInformationSession(argumentsArray);
+    final sessionId = session.getSessionId();
+
+    FFmpegKitFactory.setExecuteCallback(sessionId, executeCallback);
+    FFmpegKitFactory.setLogCallback(sessionId, logCallback);
+
+    return session;
+  }
+
+  /// Creates a new MediaInformation session from [sessionMap], which includes
+  /// session fields as map keys.
+  static MediaInformationSession fromMap(Map<dynamic, dynamic> sessionMap) =>
+      AbstractSession.createMediaInformationSessionFromMap(sessionMap);
+
+  /// Returns the media information extracted in this session.
+  MediaInformation? getMediaInformation() => this._mediaInformation;
+
+  /// Sets the media information extracted in this session.
+  void setMediaInformation(MediaInformation? mediaInformation) {
+    this._mediaInformation = mediaInformation;
+  }
+}

flutter/flutter/lib/packages.dart

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import 'ffmpeg_kit_config.dart';
+
+/// Helper class to extract binary package information.
+class Packages {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+
+  /// Returns the FFmpegKit Flutter binary package name.
+  static Future<String?> getPackageName() async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform.getPackageName();
+    } on PlatformException catch (e, stack) {
+      print("Plugin getPackageName error: ${e.message}");
+      return Future.error("getPackageName failed.", stack);
+    }
+  }
+
+  /// Returns enabled external libraries by FFmpeg.
+  static Future<List<String>> getExternalLibraries() async {
+    try {
+      await FFmpegKitConfig.init();
+      return _platform.getExternalLibraries().then((externalLibraries) {
+        if (externalLibraries == null) {
+          return List.empty();
+        } else {
+          return externalLibraries.cast<String>();
+        }
+      });
+    } on PlatformException catch (e, stack) {
+      print("Plugin getExternalLibraries error: ${e.message}");
+      return Future.error("getExternalLibraries failed.", stack);
+    }
+  }
+}

flutter/flutter/lib/return_code.dart

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+class ReturnCode {
+  static const int success = 0;
+  static const int cancel = 255;
+
+  int _value;
+
+  ReturnCode(this._value);
+
+  static bool isSuccess(ReturnCode? returnCode) =>
+      returnCode?.getValue() == ReturnCode.success;
+
+  static bool isCancel(ReturnCode? returnCode) =>
+      returnCode?.getValue() == ReturnCode.cancel;
+
+  int getValue() => this._value;
+
+  bool isValueSuccess() => this._value == ReturnCode.success;
+
+  bool isValueError() =>
+      (this._value != ReturnCode.success) && (this._value != ReturnCode.cancel);
+
+  bool isValueCancel() => this._value == ReturnCode.cancel;
+
+  String toString() => this._value.toString();
+}

flutter/flutter/lib/session.dart

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'execute_callback.dart';
+import 'log.dart';
+import 'log_callback.dart';
+import 'log_redirection_strategy.dart';
+import 'return_code.dart';
+import 'session_state.dart';
+
+/// Common interface for all "FFmpegKit" sessions.
+abstract class Session {
+  /// Returns the session specific execute callback function.
+  ExecuteCallback? getExecuteCallback();
+
+  /// Returns the session specific log callback function.
+  LogCallback? getLogCallback();
+
+  /// Returns the session identifier.
+  int? getSessionId();
+
+  /// Returns session create time.
+  DateTime? getCreateTime();
+
+  /// Returns session start time.
+  DateTime? getStartTime();
+
+  /// Returns session end time.
+  Future<DateTime?> getEndTime();
+
+  /// Returns time taken to execute this session in milliseconds or zero (0)
+  /// if the session is not over yet.
+  Future<int> getDuration();
+
+  /// Returns command arguments as an array.
+  List<String>? getArguments();
+
+  /// Returns command arguments as a concatenated string.
+  String? getCommand();
+
+  /// Returns all log entries generated for this session. If there are
+  /// asynchronous logs that are not delivered yet, this method waits for
+  /// them until [waitTimeout].
+  Future<List<Log>> getAllLogs([int? waitTimeout = null]);
+
+  /// Returns all log entries delivered for this session. Note that if there
+  /// are asynchronous logs that are not delivered yet, this method
+  /// will not wait for them and will return immediately.
+  Future<List<Log>> getLogs();
+
+  /// Returns all log entries generated for this session as a concatenated
+  /// string. If there are asynchronous logs that are not delivered yet,
+  /// this method waits for them until [waitTimeout].
+  Future<String?> getAllLogsAsString([int? waitTimeout = null]);
+
+  /// Returns all log entries delivered for this session as a concatenated
+  /// string. Note that if there are asynchronous logs that are not
+  /// delivered yet, this method will not wait for them and will return
+  /// immediately.
+  Future<String> getLogsAsString();
+
+  /// Returns the log output generated while running the session.
+  Future<String?> getOutput();
+
+  /// Returns the state of the session.
+  Future<SessionState> getState();
+
+  /// Returns the return code for this session. Note that return code is only
+  /// set for sessions that end with COMPLETED state. If a session is not
+  /// started, still running or failed then this method returns null.
+  Future<ReturnCode?> getReturnCode();
+
+  /// Returns the stack trace of the exception received while executing this
+  /// session.
+  ///
+  /// The stack trace is only set for sessions that end with FAILED state. For
+  /// sessions that has COMPLETED state this method returns null.
+  Future<String?> getFailStackTrace();
+
+  /// Returns session specific log redirection strategy.
+  LogRedirectionStrategy? getLogRedirectionStrategy();
+
+  /// Returns whether there are still asynchronous messages being transmitted
+  /// for this session or not.
+  Future<bool> thereAreAsynchronousMessagesInTransmit();
+
+  /// Returns whether it is an "FFmpeg" session or not.
+  bool isFFmpeg();
+
+  /// Returns whether it is an "FFprobe" session or not.
+  bool isFFprobe();
+
+  /// Cancels running the session.
+  void cancel();
+}

flutter/flutter/lib/session_state.dart

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+enum SessionState { created, running, failed, completed }

flutter/flutter/lib/signal.dart

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Signals handled by FFmpegKit library.
+enum Signal { sigInt, sigQuit, sigPipe, sigTerm, sigXCpu }

flutter/flutter/lib/src/ffmpeg_kit_factory.dart

@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import '../execute_callback.dart';
+import '../ffmpeg_session.dart';
+import '../ffprobe_session.dart';
+import '../log.dart';
+import '../log_callback.dart';
+import '../log_redirection_strategy.dart';
+import '../media_information_session.dart';
+import '../session.dart';
+import '../statistics.dart';
+import '../statistics_callback.dart';
+
+final executeCallbackMap = new Map<int, ExecuteCallback>();
+final logCallbackMap = new Map<int, LogCallback>();
+final statisticsCallbackMap = new Map<int, StatisticsCallback>();
+final logRedirectionStrategyMap = new Map<int, LogRedirectionStrategy>();
+
+class FFmpegKitFactory {
+  static LogCallback? _logCallback;
+  static StatisticsCallback? _statisticsCallback;
+  static ExecuteCallback? _executeCallback;
+
+  static Statistics mapToStatistics(Map<dynamic, dynamic> statisticsMap) =>
+      new Statistics(
+          statisticsMap["sessionId"],
+          statisticsMap["videoFrameNumber"],
+          statisticsMap["videoFps"],
+          statisticsMap["videoQuality"],
+          statisticsMap["size"],
+          statisticsMap["time"],
+          statisticsMap["bitrate"],
+          statisticsMap["speed"]);
+
+  static Log mapToLog(Map<dynamic, dynamic> logMap) =>
+      new Log(logMap["sessionId"], logMap["level"], logMap["message"]);
+
+  static Session mapToSession(Map<dynamic, dynamic> sessionMap) {
+    switch (sessionMap["type"]) {
+      case 2:
+        return FFprobeSession.fromMap(sessionMap);
+      case 3:
+        return MediaInformationSession.fromMap(sessionMap);
+      case 1:
+      default:
+        return FFmpegSession.fromMap(sessionMap);
+    }
+  }
+
+  static Session? mapToNullableSession(Map<dynamic, dynamic>? sessionMap) {
+    if (sessionMap != null) {
+      switch (sessionMap["type"]) {
+        case 2:
+          return FFprobeSession.fromMap(sessionMap);
+        case 3:
+          return MediaInformationSession.fromMap(sessionMap);
+        case 1:
+        default:
+          return FFmpegSession.fromMap(sessionMap);
+      }
+    } else {
+      return null;
+    }
+  }
+
+  static String getVersion() => "4.5.0";
+
+  static LogRedirectionStrategy? getLogRedirectionStrategy(int? sessionId) =>
+      logRedirectionStrategyMap[sessionId];
+
+  static void setLogRedirectionStrategy(
+      int? sessionId, LogRedirectionStrategy? logRedirectionStrategy) {
+    if (sessionId != null && logRedirectionStrategy != null) {
+      logRedirectionStrategyMap[sessionId] = logRedirectionStrategy;
+    }
+  }
+
+  static LogCallback? getLogCallback(int? sessionId) =>
+      logCallbackMap[sessionId];
+
+  static void setLogCallback(int? sessionId, LogCallback? logCallback) {
+    if (sessionId != null && logCallback != null) {
+      logCallbackMap[sessionId] = logCallback;
+    }
+  }
+
+  static LogCallback? getGlobalLogCallback() => _logCallback;
+
+  static void setGlobalLogCallback(LogCallback? logCallback) {
+    _logCallback = logCallback;
+  }
+
+  static StatisticsCallback? getStatisticsCallback(int? sessionId) =>
+      statisticsCallbackMap[sessionId];
+
+  static void setStatisticsCallback(
+      int? sessionId, StatisticsCallback? statisticsCallback) {
+    if (sessionId != null && statisticsCallback != null) {
+      statisticsCallbackMap[sessionId] = statisticsCallback;
+    }
+  }
+
+  static StatisticsCallback? getGlobalStatisticsCallback() =>
+      _statisticsCallback;
+
+  static void setGlobalStatisticsCallback(
+      StatisticsCallback? statisticsCallback) {
+    _statisticsCallback = statisticsCallback;
+  }
+
+  static ExecuteCallback? getExecuteCallback(int? sessionId) =>
+      executeCallbackMap[sessionId];
+
+  static void setExecuteCallback(
+      int? sessionId, ExecuteCallback? executeCallback) {
+    if (sessionId != null && executeCallback != null) {
+      executeCallbackMap[sessionId] = executeCallback;
+    }
+  }
+
+  static ExecuteCallback? getGlobalExecuteCallback() => _executeCallback;
+
+  static void setGlobalExecuteCallback(ExecuteCallback? executeCallback) {
+    _executeCallback = executeCallback;
+  }
+
+  static DateTime? validDate(int? time) {
+    if (time == null || time <= 0) {
+      return null;
+    } else {
+      return DateTime.fromMillisecondsSinceEpoch(time, isUtc: false);
+    }
+  }
+}

flutter/flutter/lib/src/ffmpeg_kit_flutter_initializer.dart

@@ -0,0 +1,272 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'dart:io';
+
+import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
+import 'package:flutter/services.dart';
+
+import '../arch_detect.dart';
+import '../execute_callback.dart';
+import '../ffmpeg_kit_config.dart';
+import '../ffmpeg_session.dart';
+import '../level.dart';
+import '../log_callback.dart';
+import '../log_redirection_strategy.dart';
+import '../packages.dart';
+import '../session.dart';
+import '../statistics.dart';
+import '../statistics_callback.dart';
+import 'ffmpeg_kit_factory.dart';
+
+class FFmpegKitInitializer {
+  static FFmpegKitPlatform _platform = FFmpegKitPlatform.instance;
+  static const EventChannel _eventChannel =
+      const EventChannel('flutter.arthenica.com/ffmpeg_kit_event');
+
+  static FFmpegKitInitializer _instance = new FFmpegKitInitializer();
+
+  static bool _initialized = false;
+
+  static Future<bool> initialize() async {
+    if (!_initialized) {
+      _initialized = true;
+      await _instance._initialize();
+    }
+    return _initialized;
+  }
+
+  void _onEvent(dynamic event) {
+    if (event is Map<dynamic, dynamic>) {
+      final Map<String, dynamic> eventMap = event.cast<String, dynamic>();
+      final Map<dynamic, dynamic>? logEvent =
+          eventMap['FFmpegKitLogCallbackEvent'];
+      final Map<dynamic, dynamic>? statisticsEvent =
+          eventMap['FFmpegKitStatisticsCallbackEvent'];
+      final Map<dynamic, dynamic>? executeEvent =
+          eventMap['FFmpegKitExecuteCallbackEvent'];
+
+      if (logEvent != null) {
+        _processLogCallbackEvent(logEvent);
+      }
+
+      if (statisticsEvent != null) {
+        _processStatisticsCallbackEvent(statisticsEvent);
+      }
+
+      if (executeEvent != null) {
+        _processExecuteCallbackEvent(executeEvent);
+      }
+    }
+  }
+
+  void _onError(Object error) {
+    print('Event error: $error');
+  }
+
+  void _processLogCallbackEvent(Map<dynamic, dynamic> event) {
+    final log = FFmpegKitFactory.mapToLog(event);
+    final int sessionId = event["sessionId"];
+    final int level = event["level"];
+    final String text = event["message"];
+    final int activeLogLevel = FFmpegKitConfig.getLogLevel();
+    var globalCallbackDefined = false;
+    var sessionCallbackDefined = false;
+    LogRedirectionStrategy activeLogRedirectionStrategy =
+        FFmpegKitConfig.getLogRedirectionStrategy();
+
+    // avLogStderr logs are always redirected
+    if ((activeLogLevel == Level.avLogQuiet && level != Level.avLogStderr) ||
+        level > activeLogLevel) {
+      // LOG NEITHER PRINTED NOR FORWARDED
+      return;
+    }
+
+    FFmpegKitConfig.getSession(sessionId).then((Session? session) {
+      activeLogRedirectionStrategy =
+          session?.getLogRedirectionStrategy() ?? activeLogRedirectionStrategy;
+      final LogCallback? logCallback = session?.getLogCallback();
+
+      if (logCallback != null) {
+        sessionCallbackDefined = true;
+
+        try {
+          // NOTIFY SESSION CALLBACK DEFINED
+          logCallback(log);
+        } on Exception catch (e, stack) {
+          print("Exception thrown inside session LogCallback block. $e");
+          print(stack);
+        }
+      }
+
+      final globalLogCallbackFunction = FFmpegKitFactory.getGlobalLogCallback();
+      if (globalLogCallbackFunction != null) {
+        globalCallbackDefined = true;
+
+        try {
+          // NOTIFY GLOBAL CALLBACK DEFINED
+          globalLogCallbackFunction(log);
+        } on Exception catch (e, stack) {
+          print("Exception thrown inside global LogCallback block. $e");
+          print(stack);
+        }
+      }
+
+      // EXECUTE THE LOG STRATEGY
+      switch (activeLogRedirectionStrategy) {
+        case LogRedirectionStrategy.neverPrintLogs:
+          {
+            return;
+          }
+        case LogRedirectionStrategy.printLogsWhenGlobalCallbackNotDefined:
+          {
+            if (globalCallbackDefined) {
+              return;
+            }
+          }
+          break;
+        case LogRedirectionStrategy.printLogsWhenSessionCallbackNotDefined:
+          {
+            if (sessionCallbackDefined) {
+              return;
+            }
+          }
+          break;
+        case LogRedirectionStrategy.printLogsWhenNoCallbacksDefined:
+          {
+            if (globalCallbackDefined || sessionCallbackDefined) {
+              return;
+            }
+          }
+          break;
+        case LogRedirectionStrategy.alwaysPrintLogs:
+          {}
+          break;
+      }
+
+      // PRINT LOGS
+      switch (level) {
+        case Level.avLogQuiet:
+          {
+            // PRINT NO OUTPUT
+          }
+          break;
+        default:
+          {
+            stdout.write(text);
+          }
+      }
+    });
+  }
+
+  void _processStatisticsCallbackEvent(Map<dynamic, dynamic> event) {
+    final Statistics statistics = FFmpegKitFactory.mapToStatistics(event);
+    final int sessionId = event["sessionId"];
+
+    FFmpegKitConfig.getSession(sessionId).then((Session? session) {
+      if (session != null && session.isFFmpeg()) {
+        final FFmpegSession ffmpegSession = session as FFmpegSession;
+        final StatisticsCallback? statisticsCallback =
+            ffmpegSession.getStatisticsCallback();
+
+        if (statisticsCallback != null) {
+          try {
+            // NOTIFY SESSION CALLBACK DEFINED
+            statisticsCallback(statistics);
+          } on Exception catch (e, stack) {
+            print(
+                "Exception thrown inside session StatisticsCallback block. $e");
+            print(stack);
+          }
+        }
+      }
+
+      final globalStatisticsCallbackFunction =
+          FFmpegKitFactory.getGlobalStatisticsCallback();
+      if (globalStatisticsCallbackFunction != null) {
+        try {
+          // NOTIFY GLOBAL CALLBACK DEFINED
+          globalStatisticsCallbackFunction(statistics);
+        } on Exception catch (e, stack) {
+          print("Exception thrown inside global StatisticsCallback block. $e");
+          print(stack);
+        }
+      }
+    });
+  }
+
+  void _processExecuteCallbackEvent(Map<dynamic, dynamic> event) {
+    final int sessionId = event["sessionId"];
+
+    FFmpegKitConfig.getSession(sessionId).then((Session? session) {
+      final ExecuteCallback? executeCallback = session?.getExecuteCallback();
+
+      if (executeCallback != null && session != null) {
+        try {
+          // NOTIFY SESSION CALLBACK DEFINED
+          executeCallback(session);
+        } on Exception catch (e, stack) {
+          print("Exception thrown inside session ExecuteCallback block. $e");
+          print(stack);
+        }
+      }
+
+      final globalExecuteCallbackFunction =
+          FFmpegKitFactory.getGlobalExecuteCallback();
+      if (globalExecuteCallbackFunction != null && session != null) {
+        try {
+          // NOTIFY GLOBAL CALLBACK DEFINED
+          globalExecuteCallbackFunction(session);
+        } on Exception catch (e, stack) {
+          print("Exception thrown inside global ExecuteCallback block. $e");
+          print(stack);
+        }
+      }
+    });
+  }
+
+  Future<int?> _getLogLevel() async {
+    try {
+      return _platform.ffmpegKitFlutterInitializerGetLogLevel();
+    } on PlatformException catch (e, stack) {
+      print("Plugin _getLogLevel error: ${e.message}");
+      return Future.error("_getLogLevel failed.", stack);
+    }
+  }
+
+  Future<void> _initialize() async {
+    print("Loading ffmpeg-kit-flutter.");
+
+    _eventChannel.receiveBroadcastStream().listen(_onEvent, onError: _onError);
+
+    final logLevel = await _getLogLevel();
+    if (logLevel != null) {
+      FFmpegKitConfig.setLogLevel(logLevel);
+    }
+    final version = FFmpegKitFactory.getVersion();
+    final platform = await FFmpegKitConfig.getPlatform();
+    final arch = await ArchDetect.getArch();
+    final packageName = await Packages.getPackageName();
+    await FFmpegKitConfig.enableRedirection();
+    final isLTSPostfix = (await FFmpegKitConfig.isLTSBuild()) ? "-lts" : "";
+
+    final fullVersion = "$platform-$packageName-$arch-$version$isLTSPostfix";
+    print("Loaded ffmpeg-kit-flutter-$fullVersion.");
+  }
+}

flutter/flutter/lib/statistics.dart

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Statistics entry for an FFmpeg execute session.
+class Statistics {
+  int _sessionId;
+  int _videoFrameNumber;
+  double _videoFps;
+  double _videoQuality;
+  int _size;
+  int _time;
+  double _bitrate;
+  double _speed;
+
+  Statistics(this._sessionId, this._videoFrameNumber, this._videoFps,
+      this._videoQuality, this._size, this._time, this._bitrate, this._speed);
+
+  int getSessionId() => this._sessionId;
+
+  void setSessionId(int sessionId) {
+    this._sessionId = sessionId;
+  }
+
+  int getVideoFrameNumber() => this._videoFrameNumber;
+
+  void setVideoFrameNumber(int videoFrameNumber) {
+    this._videoFrameNumber = videoFrameNumber;
+  }
+
+  double getVideoFps() => this._videoFps;
+
+  void setVideoFps(double videoFps) {
+    this._videoFps = videoFps;
+  }
+
+  double getVideoQuality() => this._videoQuality;
+
+  void setVideoQuality(double videoQuality) {
+    this._videoQuality = videoQuality;
+  }
+
+  int getSize() => this._size;
+
+  void setSize(int size) {
+    this._size = size;
+  }
+
+  int getTime() => this._time;
+
+  void setTime(int time) {
+    this._time = time;
+  }
+
+  double getBitrate() => this._bitrate;
+
+  void setBitrate(double bitrate) {
+    this._bitrate = bitrate;
+  }
+
+  double getSpeed() => this._speed;
+
+  void setSpeed(double speed) {
+    this._speed = speed;
+  }
+}

flutter/flutter/lib/statistics_callback.dart

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'statistics.dart';
+
+/// Callback function that receives statistics generated for "FFmpeg" sessions.dc
+typedef StatisticsCallback = void Function(Statistics statistics);

flutter/flutter/lib/stream_information.dart

@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2019-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Stream information class.
+class StreamInformation {
+  static const keyIndex = "index";
+  static const keyType = "codec_type";
+  static const keyCodec = "codec_name";
+  static const keyCodecLong = "codec_long_name";
+  static const keyFormat = "pix_fmt";
+  static const keyWidth = "width";
+  static const keyHeight = "height";
+  static const keyBitRate = "bit_rate";
+  static const keySampleRate = "sample_rate";
+  static const keySampleFormat = "sample_fmt";
+  static const keyChannelLayout = "channel_layout";
+  static const keySampleAspectRatio = "sample_aspect_ratio";
+  static const keyDisplayAspectRatio = "display_aspect_ratio";
+  static const keyAverageFrameRate = "avg_frame_rate";
+  static const keyRealFrameRate = "r_frame_rate";
+  static const keyTimeBase = "time_base";
+  static const keyCodecTimeBase = "codec_time_base";
+  static const keyTags = "tags";
+
+  Map<dynamic, dynamic>? _allProperties;
+
+  /// Creates a new [StreamInformation] instance
+  StreamInformation(this._allProperties);
+
+  /// Returns stream index.
+  int? getIndex() => this.getNumberProperty(keyIndex)?.toInt();
+
+  /// Returns stream type.
+  String? getType() => this.getStringProperty(StreamInformation.keyType);
+
+  /// Returns stream codec.
+  String? getCodec() => this.getStringProperty(StreamInformation.keyCodec);
+
+  /// Returns stream codec in long format.
+  String? getFullCodec() =>
+      this.getStringProperty(StreamInformation.keyCodecLong);
+
+  /// Returns stream format.
+  String? getFormat() => this.getStringProperty(StreamInformation.keyFormat);
+
+  /// Returns width.
+  int? getWidth() =>
+      this.getNumberProperty(StreamInformation.keyWidth)?.toInt();
+
+  /// Returns height.
+  int? getHeight() =>
+      this.getNumberProperty(StreamInformation.keyHeight)?.toInt();
+
+  /// Returns bitrate.
+  String? getBitrate() => this.getStringProperty(StreamInformation.keyBitRate);
+
+  /// Returns sample rate.
+  String? getSampleRate() =>
+      this.getStringProperty(StreamInformation.keySampleRate);
+
+  /// Returns sample format.
+  String? getSampleFormat() =>
+      this.getStringProperty(StreamInformation.keySampleFormat);
+
+  /// Returns channel layout.
+  String? getChannelLayout() =>
+      this.getStringProperty(StreamInformation.keyChannelLayout);
+
+  /// Returns sample aspect ratio.
+  String? getSampleAspectRatio() =>
+      this.getStringProperty(StreamInformation.keySampleAspectRatio);
+
+  /// Returns display aspect ratio.
+  String? getDisplayAspectRatio() =>
+      this.getStringProperty(StreamInformation.keyDisplayAspectRatio);
+
+  /// Returns average frame rate.
+  String? getAverageFrameRate() =>
+      this.getStringProperty(StreamInformation.keyAverageFrameRate);
+
+  /// Returns real frame rate.
+  String? getRealFrameRate() =>
+      this.getStringProperty(StreamInformation.keyRealFrameRate);
+
+  /// Returns time base.
+  String? getTimeBase() =>
+      this.getStringProperty(StreamInformation.keyTimeBase);
+
+  /// Returns codec time base.
+  String? getCodecTimeBase() =>
+      this.getStringProperty(StreamInformation.keyCodecTimeBase);
+
+  /// Returns all tags.
+  Map<dynamic, dynamic>? getTags() =>
+      this.getProperties(StreamInformation.keyTags);
+
+  /// Returns the stream property associated with the key.
+  String? getStringProperty(String key) => this._allProperties?[key];
+
+  /// Returns the stream property associated with the key.
+  num? getNumberProperty(String key) => this._allProperties?[key];
+
+  /// Returns the stream properties associated with the key.
+  dynamic getProperties(String key) => this._allProperties?[key];
+
+  /// Returns all properties found.d
+  Map<dynamic, dynamic>? getAllProperties() => this._allProperties;
+}

flutter/flutter/macos/Classes/FFmpegKitFlutterPlugin.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2018-2021 Taner Sener
+ *
+ * This file is part of FFmpegKit.
+ *
+ * FFmpegKit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * FFmpegKit is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpegKit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import <FlutterMacOS/FlutterMacOS.h>
+
+@interface FFmpegKitFlutterPlugin : NSObject<FlutterPlugin,FlutterStreamHandler>
+@end

flutter/flutter/macos/ffmpeg_kit_flutter.podspec

@@ -0,0 +1,135 @@
+Pod::Spec.new do |s|
+  s.name             = 'ffmpeg_kit_flutter'
+  s.version          = '4.5.0'
+  s.summary          = 'FFmpeg Kit for Flutter'
+  s.description      = 'A Flutter plugin for running FFmpeg and FFprobe commands.'
+  s.homepage         = 'https://github.com/tanersener/ffmpeg-kit'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Taner Sener' => 'tanersener@gmail.com' }
+
+  s.platform            = :osx
+  s.requires_arc        = true
+  s.static_framework    = true
+
+  s.source              = { :path => '.' }
+  s.source_files        = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
+
+  s.default_subspec     = 'https'
+
+  s.dependency          'FlutterMacOS'
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
+
+  s.subspec 'min' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-min', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'min-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-min', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'min-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-min-gpl', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'min-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-min-gpl', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'https' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-https', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'https-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-https', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'https-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-https-gpl', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'https-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-https-gpl', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'audio' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-audio', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'audio-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-audio', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'video' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-video', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'video-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-video', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'full' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-full', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'full-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-full', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+  s.subspec 'full-gpl' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-full-gpl', "4.5"
+    ss.osx.deployment_target = '10.15'
+  end
+
+  s.subspec 'full-gpl-lts' do |ss|
+    ss.source_files         = 'Classes/**/*'
+    ss.public_header_files  = 'Classes/**/*.h'
+    ss.dependency 'ffmpeg-kit-macos-full-gpl', "4.5.LTS"
+    ss.osx.deployment_target = '10.11'
+  end
+
+end

flutter/flutter/pubspec.yaml

@@ -0,0 +1,31 @@
+name: ffmpeg_kit_flutter
+description: FFmpeg Kit for Flutter. Supports Android, iOS and macOS platforms.
+repository: https://github.com/tanersener/ffmpeg-kit
+issue_tracker: https://github.com/tanersener/ffmpeg-kit/issues
+homepage: https://github.com/tanersener/ffmpeg-kit
+version: 4.5.0
+
+environment:
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.0"
+
+flutter:
+  plugin:
+    platforms:
+      android:
+        package: com.arthenica.ffmpegkit.flutter
+        pluginClass: FFmpegKitFlutterPlugin
+      ios:
+        pluginClass: FFmpegKitFlutterPlugin
+      macos:
+        pluginClass: FFmpegKitFlutterPlugin
+
+dependencies:
+  ffmpeg_kit_flutter_platform_interface: ^0.1.0
+  flutter:
+    sdk: flutter
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  plugin_platform_interface: ^2.0.2

flutter/flutter_platform_interface/.gitignore

@@ -0,0 +1,5 @@
+.DS_Store
+.dart_tool/
+.packages
+.pub/
+build/

flutter/flutter_platform_interface/CHANGELOG.md

@@ -0,0 +1,2 @@
+## 0.1.0
+- Initial release

flutter/flutter_platform_interface/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2021 Taner Sener
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

flutter/flutter_platform_interface/README.md

@@ -0,0 +1,9 @@
+# Platform Interface for FFmpegKit Flutter
+
+A common platform interface for the [`ffmpeg_kit_flutter`][1] plugin.
+
+This interface allows platform-specific implementations of the `ffmpeg_kit_flutter`
+plugin, as well as the plugin itself, to ensure they are supporting the same
+interface.
+
+[1]: ../flutter

flutter/flutter_platform_interface/analysis_options.yaml

@@ -0,0 +1,68 @@
+analyzer:
+  enable-experiment:
+    - non-nullable
+  strong-mode:
+    implicit-dynamic: false
+  errors:
+    missing_required_param: warning
+    missing_return: warning
+
+linter:
+  rules:
+    - avoid_catching_errors
+    - avoid_function_literals_in_foreach_calls
+    - avoid_private_typedef_functions
+    - avoid_renaming_method_parameters
+    - avoid_returning_null_for_void
+    - avoid_unused_constructor_parameters
+    - avoid_void_async
+    - await_only_futures
+    - camel_case_types
+    - cancel_subscriptions
+    - comment_references
+    - constant_identifier_names
+    - control_flow_in_finally
+    - directives_ordering
+    - empty_statements
+    - file_names
+    - hash_and_equals
+    - implementation_imports
+    - iterable_contains_unrelated_type
+    - join_return_with_assignment
+    - lines_longer_than_80_chars
+    - list_remove_unrelated_type
+    - missing_whitespace_between_adjacent_strings
+    - no_runtimeType_toString
+    - non_constant_identifier_names
+    - only_throw_errors
+    - overridden_fields
+    - package_api_docs
+    - package_names
+    - package_prefixed_library_names
+    - prefer_asserts_in_initializer_lists
+    - prefer_const_constructors
+    - prefer_const_declarations
+    - prefer_expression_function_bodies
+    - prefer_final_locals
+    - prefer_function_declarations_over_variables
+    - prefer_initializing_formals
+    - prefer_inlined_adds
+    - prefer_interpolation_to_compose_strings
+    - prefer_is_not_operator
+    - prefer_null_aware_operators
+    - prefer_relative_imports
+    - prefer_typing_uninitialized_variables
+    - prefer_void_to_null
+    - provide_deprecation_message
+    - sort_pub_dependencies
+    - test_types_in_equals
+    - throw_in_finally
+    - unnecessary_brace_in_string_interps
+    - unnecessary_lambdas
+    - unnecessary_null_aware_assignments
+    - unnecessary_overrides
+    - unnecessary_parenthesis
+    - unnecessary_statements
+    - unnecessary_string_interpolations
+    - use_string_buffers
+    - void_checks

flutter/flutter_platform_interface/lib/ffmpeg_kit_flutter_platform_interface.dart

@@ -0,0 +1,378 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import 'package:plugin_platform_interface/plugin_platform_interface.dart';
+
+import 'method_channel_ffmpeg_kit_flutter.dart';
+
+abstract class FFmpegKitPlatform extends PlatformInterface {
+  /// Constructs a FFmpegKitPlatform.
+  FFmpegKitPlatform() : super(token: _token);
+
+  static final Object _token = Object();
+
+  static FFmpegKitPlatform _instance = MethodChannelFFmpegKit();
+
+  /// The default instance of [FFmpegKitPlatform] to use.
+  ///
+  /// Defaults to [MethodChannelFFmpegKit].
+  static FFmpegKitPlatform get instance => _instance;
+
+  /// Platform-specific plugins should set this with their own platform-specific
+  /// class that extends [FFmpegKitPlatform] when they register
+  /// themselves.
+  static set instance(FFmpegKitPlatform instance) {
+    PlatformInterface.verifyToken(instance, _token);
+    _instance = instance;
+  }
+
+  // AbstractSession
+
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateFFmpegSession(
+      List<String> argumentsArray) async {
+    throw UnimplementedError(
+        'abstractSessionCreateFFmpegSession() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateFFprobeSession(
+      List<String> argumentsArray) async {
+    throw UnimplementedError(
+        'abstractSessionCreateFFprobeSession() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateMediaInformationSession(
+      List<String> argumentsArray) async {
+    throw UnimplementedError('abstractSessionCreateMediaInformationSession()'
+        ' has not been implemented!');
+  }
+
+  Future<int?> abstractSessionGetEndTime(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetEndTime() has not been implemented!');
+  }
+
+  Future<int?> abstractSessionGetDuration(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetDuration() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> abstractSessionGetAllLogs(
+      int? sessionId, int? waitTimeout) async {
+    throw UnimplementedError(
+        'abstractSessionGetAllLogs() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> abstractSessionGetLogs(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetLogs() has not been implemented!');
+  }
+
+  Future<String?> abstractSessionGetAllLogsAsString(
+      int? sessionId, int? waitTimeout) async {
+    throw UnimplementedError(
+        'abstractSessionGetAllLogsAsString() has not been implemented!');
+  }
+
+  Future<int?> abstractSessionGetState(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetState() has not been implemented!');
+  }
+
+  Future<int?> abstractSessionGetReturnCode(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetReturnCode() has not been implemented!');
+  }
+
+  Future<String?> abstractSessionGetFailStackTrace(int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionGetFailStackTrace() has not been implemented!');
+  }
+
+  Future<bool> abstractSessionThereAreAsynchronousMessagesInTransmit(
+      int? sessionId) async {
+    throw UnimplementedError(
+        'abstractSessionThereAreAsynchronousMessagesInTransmit()'
+        ' has not been implemented!');
+  }
+
+  // ArchDetect
+
+  Future<String> archDetectGetArch() async {
+    throw UnimplementedError('archDetectGetArch() has not been implemented!');
+  }
+
+  // FFmpegKit
+
+  Future<void> ffmpegKitCancel() async {
+    throw UnimplementedError('ffmpegKitCancel() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitCancelSession(int sessionId) async {
+    throw UnimplementedError(
+        'ffmpegKitCancelSession() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> ffmpegKitListSessions() async {
+    throw UnimplementedError(
+        'ffmpegKitListSessions() has not been implemented!');
+  }
+
+  // FFmpegKitConfig
+
+  Future<void> ffmpegKitConfigEnableRedirection() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigEnableRedirection() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigDisableRedirection() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigDisableRedirection() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetFontconfigConfigurationPath(
+      String path) async {
+    throw UnimplementedError('ffmpegKitConfigSetFontconfigConfigurationPath()'
+        ' has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetFontDirectory(
+      String path, Map<String, String>? mapping) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSetFontDirectory() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetFontDirectoryList(
+      List<String> fontDirectoryList, Map<String, String>? mapping) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSetFontDirectoryList() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigRegisterNewFFmpegPipe() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigRegisterNewFFmpegPipe() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigCloseFFmpegPipe(String ffmpegPipePath) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigCloseFFmpegPipe() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigGetFFmpegVersion() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetFFmpegVersion() has not been implemented!');
+  }
+
+  Future<bool?> ffmpegKitConfigIsLTSBuild() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigIsLTSBuild() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigGetBuildDate() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetBuildDate() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetEnvironmentVariable(
+      String name, String value) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSetEnvironmentVariable() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigIgnoreSignal(int signal) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigIgnoreSignal() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigAsyncFFmpegExecute(int? sessionId) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigAsyncFFmpegExecute() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigAsyncFFprobeExecute(int? sessionId) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigAsyncFFprobeExecute() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigAsyncGetMediaInformationExecute(
+      int? sessionId, int? waitTimeout) async {
+    throw UnimplementedError('ffmpegKitConfigAsyncGetMediaInformationExecute()'
+        ' has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetLogLevel(int logLevel) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSetLogLevel() has not been implemented!');
+  }
+
+  Future<int?> ffmpegKitConfigGetSessionHistorySize() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSessionHistorySize() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigSetSessionHistorySize(
+      int sessionHistorySize) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSetSessionHistorySize() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?> ffmpegKitConfigGetSession(
+      int sessionId) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSession() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?> ffmpegKitConfigGetLastSession() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetLastSession() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?>
+      ffmpegKitConfigGetLastCompletedSession() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetLastCompletedSession() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> ffmpegKitConfigGetSessions() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSessions() has not been implemented!');
+  }
+
+  Future<void> clearSessions() async {
+    throw UnimplementedError('clearSessions() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> ffmpegKitConfigGetSessionsByState(
+      int sessionState) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSessionsByState() has not been implemented!');
+  }
+
+  Future<int?> ffmpegKitConfigMessagesInTransmit(int sessionId) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigMessagesInTransmit() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigEnableLogs() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigEnableLogs() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigDisableLogs() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigDisableLogs() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigEnableStatistics() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigEnableStatistics() has not been implemented!');
+  }
+
+  Future<void> ffmpegKitConfigDisableStatistics() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigDisableStatistics() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigGetPlatform() async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetPlatform() has not been implemented!');
+  }
+
+  Future<int?> ffmpegKitConfigWriteToPipe(
+      String inputPath, String pipePath) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigWriteToPipe() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigSelectDocumentForRead(
+      String? type, List<String>? extraTypes) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSelectDocumentForRead() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigSelectDocumentForWrite(
+      String? title, String? type, List<String>? extraTypes) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigSelectDocumentForWrite() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigGetSafParameterForRead(
+      String uriString) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSafParameterForRead() has not been implemented!');
+  }
+
+  Future<String?> ffmpegKitConfigGetSafParameterForWrite(
+      String uriString) async {
+    throw UnimplementedError(
+        'ffmpegKitConfigGetSafParameterForWrite() has not been implemented!');
+  }
+
+  // FFmpegKitFlutterInitializer
+
+  Future<int?> ffmpegKitFlutterInitializerGetLogLevel() async {
+    throw UnimplementedError(
+        'ffmpegKitFlutterInitializerGetLogLevel() has not been implemented!');
+  }
+
+  // FFmpegSession
+
+  Future<List<dynamic>?> ffmpegSessionGetAllStatistics(
+      int? sessionId, int? waitTimeout) async {
+    throw UnimplementedError(
+        'ffmpegSessionGetAllStatistics() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> ffmpegSessionGetStatistics(int? sessionId) async {
+    throw UnimplementedError(
+        'ffmpegSessionGetStatistics() has not been implemented!');
+  }
+
+  // FFprobeKit
+
+  Future<List<dynamic>?> ffprobeKitListSessions() async {
+    throw UnimplementedError(
+        'ffprobeKitListSessions() has not been implemented!');
+  }
+
+  // MediaInformationJsonParser
+
+  Future<Map<dynamic, dynamic>?> mediaInformationJsonParserFrom(
+      String ffprobeJsonOutput) async {
+    throw UnimplementedError(
+        'mediaInformationJsonParserFrom() has not been implemented!');
+  }
+
+  Future<Map<dynamic, dynamic>?> mediaInformationJsonParserFromWithError(
+      String ffprobeJsonOutput) async {
+    throw UnimplementedError(
+        'mediaInformationJsonParserFromWithError() has not been implemented!');
+  }
+
+  Future<String?> getPackageName() async {
+    throw UnimplementedError('getPackageName() has not been implemented!');
+  }
+
+  Future<List<dynamic>?> getExternalLibraries() async {
+    throw UnimplementedError(
+        'getExternalLibraries() has not been implemented!');
+  }
+}

flutter/flutter_platform_interface/lib/method_channel_ffmpeg_kit_flutter.dart

@@ -0,0 +1,347 @@
+/*
+ * Copyright (c) 2021 Taner Sener
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+import 'ffmpeg_kit_flutter_platform_interface.dart';
+
+const MethodChannel _channel =
+    const MethodChannel('flutter.arthenica.com/ffmpeg_kit');
+
+/// An implementation of [FFmpegKitPlatform] that uses method channels.
+class MethodChannelFFmpegKit extends FFmpegKitPlatform {
+  /// The MethodChannel that is being used by this implementation of the plugin.
+  @visibleForTesting
+  MethodChannel get channel => _channel;
+
+  // AbstractSession
+
+  @override
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateFFmpegSession(
+          List<String> argumentsArray) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'ffmpegSession', {'arguments': argumentsArray});
+
+  @override
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateFFprobeSession(
+          List<String> argumentsArray) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'ffprobeSession', {'arguments': argumentsArray});
+
+  @override
+  Future<Map<dynamic, dynamic>?> abstractSessionCreateMediaInformationSession(
+          List<String> argumentsArray) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'mediaInformationSession', {'arguments': argumentsArray});
+
+  @override
+  Future<int?> abstractSessionGetEndTime(int? sessionId) async => _channel
+      .invokeMethod<int>('abstractSessionGetEndTime', {'sessionId': sessionId});
+
+  @override
+  Future<int?> abstractSessionGetDuration(int? sessionId) async =>
+      _channel.invokeMethod<int>(
+          'abstractSessionGetDuration', {'sessionId': sessionId});
+
+  @override
+  Future<List<dynamic>?> abstractSessionGetAllLogs(
+          int? sessionId, int? waitTimeout) async =>
+      _channel.invokeMethod<List<dynamic>>('abstractSessionGetAllLogs',
+          {'sessionId': sessionId, 'waitTimeout': waitTimeout});
+
+  @override
+  Future<List<dynamic>?> abstractSessionGetLogs(int? sessionId) async =>
+      _channel.invokeMethod<List<dynamic>>(
+          'abstractSessionGetLogs', {'sessionId': sessionId});
+
+  @override
+  Future<String?> abstractSessionGetAllLogsAsString(
+          int? sessionId, int? waitTimeout) async =>
+      _channel.invokeMethod<String>('abstractSessionGetAllLogsAsString',
+          {'sessionId': sessionId, 'waitTimeout': waitTimeout});
+
+  @override
+  Future<int?> abstractSessionGetState(int? sessionId) async => _channel
+      .invokeMethod<int>('abstractSessionGetState', {'sessionId': sessionId});
+
+  @override
+  Future<int?> abstractSessionGetReturnCode(int? sessionId) async =>
+      _channel.invokeMethod<int>(
+          'abstractSessionGetReturnCode', {'sessionId': sessionId});
+
+  @override
+  Future<String?> abstractSessionGetFailStackTrace(int? sessionId) async =>
+      _channel.invokeMethod<String>(
+          'abstractSessionGetFailStackTrace', {'sessionId': sessionId});
+
+  @override
+  Future<bool> abstractSessionThereAreAsynchronousMessagesInTransmit(
+          int? sessionId) async =>
+      _channel.invokeMethod<bool>(
+          'abstractSessionThereAreAsynchronousMessagesInTransmit',
+          {'sessionId': sessionId}).then((value) => value ?? false);
+
+  // ArchDetect
+
+  @override
+  Future<String> archDetectGetArch() async =>
+      _channel.invokeMethod<String>('getArch').then((value) => value ?? "");
+
+  // FFmpegKit
+
+  @override
+  Future<void> ffmpegKitCancel() async => _channel.invokeMethod<void>('cancel');
+
+  @override
+  Future<void> ffmpegKitCancelSession(int sessionId) async =>
+      _channel.invokeMethod<void>('cancelSession', {'sessionId': sessionId});
+
+  @override
+  Future<List<dynamic>?> ffmpegKitListSessions() async =>
+      _channel.invokeMethod<List<dynamic>>('getFFmpegSessions');
+
+  // FFmpegKitConfig
+
+  @override
+  Future<void> ffmpegKitConfigEnableRedirection() async =>
+      _channel.invokeMethod<void>('enableRedirection');
+
+  @override
+  Future<void> ffmpegKitConfigDisableRedirection() async =>
+      _channel.invokeMethod<void>('disableRedirection');
+
+  @override
+  Future<void> ffmpegKitConfigSetFontconfigConfigurationPath(
+          String path) async =>
+      _channel
+          .invokeMethod<void>('setFontconfigConfigurationPath', {'path': path});
+
+  @override
+  Future<void> ffmpegKitConfigSetFontDirectory(
+          String path, Map<String, String>? mapping) async =>
+      _channel.invokeMethod<void>(
+          'setFontDirectory', {'fontDirectory': path, 'fontNameMap': mapping});
+
+  @override
+  Future<void> ffmpegKitConfigSetFontDirectoryList(
+          List<String> fontDirectoryList, Map<String, String>? mapping) async =>
+      _channel.invokeMethod<void>('setFontDirectoryList',
+          {'fontDirectoryList': fontDirectoryList, 'fontNameMap': mapping});
+
+  @override
+  Future<String?> ffmpegKitConfigRegisterNewFFmpegPipe() async =>
+      _channel.invokeMethod<String>('registerNewFFmpegPipe');
+
+  @override
+  Future<void> ffmpegKitConfigCloseFFmpegPipe(String ffmpegPipePath) async =>
+      _channel.invokeMethod<void>(
+          'closeFFmpegPipe', {'ffmpegPipePath': ffmpegPipePath});
+
+  @override
+  Future<String?> ffmpegKitConfigGetFFmpegVersion() async =>
+      _channel.invokeMethod<String>('getFFmpegVersion');
+
+  @override
+  Future<bool?> ffmpegKitConfigIsLTSBuild() async =>
+      _channel.invokeMethod<bool>('isLTSBuild');
+
+  @override
+  Future<String?> ffmpegKitConfigGetBuildDate() async =>
+      _channel.invokeMethod<String>('getBuildDate');
+
+  @override
+  Future<void> ffmpegKitConfigSetEnvironmentVariable(
+          String name, String value) async =>
+      _channel.invokeMethod<void>('setEnvironmentVariable',
+          {'variableName': name, 'variableValue': value});
+
+  @override
+  Future<void> ffmpegKitConfigIgnoreSignal(int signal) async =>
+      _channel.invokeMethod<void>('ignoreSignal', {'signal': signal});
+
+  @override
+  Future<void> ffmpegKitConfigAsyncFFmpegExecute(int? sessionId) async =>
+      _channel.invokeMethod<void>(
+          'asyncFFmpegSessionExecute', {'sessionId': sessionId});
+
+  @override
+  Future<void> ffmpegKitConfigAsyncFFprobeExecute(int? sessionId) async =>
+      _channel.invokeMethod<void>(
+          'asyncFFprobeSessionExecute', {'sessionId': sessionId});
+
+  @override
+  Future<void> ffmpegKitConfigAsyncGetMediaInformationExecute(
+          int? sessionId, int? waitTimeout) async =>
+      _channel.invokeMethod<void>('asyncMediaInformationSessionExecute',
+          {'sessionId': sessionId, 'waitTimeout': waitTimeout});
+
+  @override
+  Future<void> ffmpegKitConfigSetLogLevel(int logLevel) async =>
+      _channel.invokeMethod<void>('setLogLevel', {'level': logLevel});
+
+  @override
+  Future<int?> ffmpegKitConfigGetSessionHistorySize() async =>
+      _channel.invokeMethod<int>('getSessionHistorySize');
+
+  @override
+  Future<void> ffmpegKitConfigSetSessionHistorySize(
+          int sessionHistorySize) async =>
+      _channel.invokeMethod<void>(
+          'setSessionHistorySize', {'sessionHistorySize': sessionHistorySize});
+
+  @override
+  Future<Map<dynamic, dynamic>?> ffmpegKitConfigGetSession(
+          int sessionId) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'getSession', {'sessionId': sessionId});
+
+  @override
+  Future<Map<dynamic, dynamic>?> ffmpegKitConfigGetLastSession() async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>('getLastSession');
+
+  @override
+  Future<Map<dynamic, dynamic>?>
+      ffmpegKitConfigGetLastCompletedSession() async => _channel
+          .invokeMethod<Map<dynamic, dynamic>>('getLastCompletedSession');
+
+  @override
+  Future<List<dynamic>?> ffmpegKitConfigGetSessions() async =>
+      _channel.invokeMethod<List<dynamic>>('getSessions');
+
+  @override
+  Future<void> clearSessions() async =>
+      _channel.invokeMethod<void>('clearSessions');
+
+  @override
+  Future<List<dynamic>?> ffmpegKitConfigGetSessionsByState(
+          int sessionState) async =>
+      _channel.invokeMethod<List<dynamic>>(
+          'getSessionsByState', {'state': sessionState});
+
+  @override
+  Future<int?> ffmpegKitConfigMessagesInTransmit(int sessionId) async =>
+      _channel
+          .invokeMethod<int>('messagesInTransmit', {'sessionId': sessionId});
+
+  @override
+  Future<void> ffmpegKitConfigEnableLogs() async =>
+      _channel.invokeMethod<void>('enableLogs');
+
+  @override
+  Future<void> ffmpegKitConfigDisableLogs() async =>
+      _channel.invokeMethod<void>('disableLogs');
+
+  @override
+  Future<void> ffmpegKitConfigEnableStatistics() async =>
+      _channel.invokeMethod<void>('enableStatistics');
+
+  @override
+  Future<void> ffmpegKitConfigDisableStatistics() async =>
+      _channel.invokeMethod<void>('disableStatistics');
+
+  @override
+  Future<String?> ffmpegKitConfigGetPlatform() async =>
+      _channel.invokeMethod<String>('getPlatform');
+
+  @override
+  Future<int?> ffmpegKitConfigWriteToPipe(
+          String inputPath, String pipePath) async =>
+      _channel.invokeMethod<int>(
+          'writeToPipe', {'input': inputPath, 'pipe': pipePath});
+
+  @override
+  Future<String?> ffmpegKitConfigSelectDocumentForRead(
+          String? type, List<String>? extraTypes) async =>
+      _channel.invokeMethod<String>('selectDocument',
+          {'writable': false, 'type': type, 'extraTypes': extraTypes});
+
+  @override
+  Future<String?> ffmpegKitConfigSelectDocumentForWrite(
+          String? title, String? type, List<String>? extraTypes) async =>
+      _channel.invokeMethod<String>('selectDocument', {
+        'writable': true,
+        'title': title,
+        'type': type,
+        'extraTypes': extraTypes
+      });
+
+  @override
+  Future<String?> ffmpegKitConfigGetSafParameterForRead(
+          String uriString) async =>
+      _channel.invokeMethod<String>(
+          'getSafParameter', {'writable': false, 'uri': uriString});
+
+  @override
+  Future<String?> ffmpegKitConfigGetSafParameterForWrite(
+          String uriString) async =>
+      _channel.invokeMethod<String>(
+          'getSafParameter', {'writable': true, 'uri': uriString});
+
+  // FFmpegKitFlutterInitializer
+
+  Future<int?> ffmpegKitFlutterInitializerGetLogLevel() async =>
+      _channel.invokeMethod<int>('getLogLevel');
+
+  // FFmpegSession
+
+  @override
+  Future<List<dynamic>?> ffmpegSessionGetAllStatistics(
+          int? sessionId, int? waitTimeout) async =>
+      _channel.invokeMethod<List<dynamic>>('ffmpegSessionGetAllStatistics',
+          {'sessionId': sessionId, 'waitTimeout': waitTimeout});
+
+  @override
+  Future<List<dynamic>?> ffmpegSessionGetStatistics(int? sessionId) async =>
+      _channel.invokeMethod<List<dynamic>>(
+          'ffmpegSessionGetStatistics', {'sessionId': sessionId});
+
+  // FFprobeKit
+
+  @override
+  Future<List<dynamic>?> ffprobeKitListSessions() async =>
+      _channel.invokeMethod<List<dynamic>>('getFFprobeSessions');
+
+  // MediaInformationJsonParser
+
+  @override
+  Future<Map<dynamic, dynamic>?> mediaInformationJsonParserFrom(
+          String ffprobeJsonOutput) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'mediaInformationJsonParserFrom',
+          {'ffprobeJsonOutput': ffprobeJsonOutput});
+
+  @override
+  Future<Map<dynamic, dynamic>?> mediaInformationJsonParserFromWithError(
+          String ffprobeJsonOutput) async =>
+      _channel.invokeMethod<Map<dynamic, dynamic>>(
+          'mediaInformationJsonParserFromWithError',
+          {'ffprobeJsonOutput': ffprobeJsonOutput});
+
+  @override
+  Future<String?> getPackageName() async =>
+      _channel.invokeMethod<String>('getPackageName');
+
+  @override
+  Future<List<dynamic>?> getExternalLibraries() async =>
+      _channel.invokeMethod<List<dynamic>>('getExternalLibraries');
+}

flutter/flutter_platform_interface/pubspec.yaml

@@ -0,0 +1,21 @@
+name: ffmpeg_kit_flutter_platform_interface
+description: A common platform interface for ffmpeg_kit_flutter plugin.
+repository: https://github.com/tanersener/ffmpeg-kit
+issue_tracker: https://github.com/tanersener/ffmpeg-kit/issues
+homepage: https://github.com/tanersener/ffmpeg-kit
+# NOTE: We strongly prefer non-breaking changes, even at the expense of a
+# less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
+version: 0.1.0
+
+environment:
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  plugin_platform_interface: ^2.0.2
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter

tools/release/flutter/create_packages.sh

@@ -0,0 +1,106 @@
+#!/bin/bash
+
+CURRENT_DIR=$(pwd)
+BASEDIR="${CURRENT_DIR}/../../.."
+TMPDIR="${BASEDIR}/.tmp"
+PACKAGES_DIR="${TMPDIR}/flutter_packages"
+SOURCE_DIR="${BASEDIR}/flutter/flutter"
+PACKAGES=(min min-gpl https https-gpl audio video full full-gpl)
+
+prepare_inline_sed() {
+  if [ "$(uname)" == "Darwin" ]; then
+    export SED_INLINE="sed -i .tmp"
+  else
+    export SED_INLINE="sed -i"
+  fi
+}
+
+create_main_releases() {
+  for CURRENT_PACKAGE in "${PACKAGES[@]}"; do
+    local FLUTTER_PACKAGE_NAME="$(echo "${CURRENT_PACKAGE}" | sed "s/\-/\_/g")"
+    local PACKAGE_PATH="${PACKAGES_DIR}/${CURRENT_PACKAGE}"
+    cp -r ${SOURCE_DIR} ${PACKAGE_PATH}
+
+    # 1. pubspec
+    $SED_INLINE "s|name: ffmpeg_kit_flutter|name: ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/pubspec.yaml
+    # UPDATE VERSION
+    rm -f ${PACKAGE_PATH}/pubspec.yaml.tmp
+
+    # 2. android
+    # UPDATE MIN SDK VERSION
+    $SED_INLINE "s|com.arthenica:.*|com.arthenica:ffmpeg-kit-$CURRENT_PACKAGE:$NATIVE_VERSION'|g" ${PACKAGE_PATH}/android/build.gradle
+    rm -f  ${PACKAGE_PATH}/android/build.gradle.tmp
+
+    # 3. ios
+    $SED_INLINE "s|ffmpeg_kit_flutter|ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec
+    # UPDATE VERSION
+    $SED_INLINE "s|s.default_subspec.*|s.default_subspec = '$CURRENT_PACKAGE'|g" ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec
+    rm -f  ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec.tmp
+    mv ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME.podspec
+
+    # 4. macos
+    $SED_INLINE "s|ffmpeg_kit_flutter|ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec
+    # UPDATE VERSION
+    $SED_INLINE "s|s.default_subspec.*|s.default_subspec = '$CURRENT_PACKAGE'|g" ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec
+    rm -f  ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec.tmp
+    mv ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME.podspec
+
+  done;
+
+  echo "main releases created!"
+}
+
+create_lts_releases() {
+  for CURRENT_PACKAGE in "${PACKAGES[@]}"; do
+    local FLUTTER_PACKAGE_NAME="$(echo "${CURRENT_PACKAGE}" | sed "s/\-/\_/g")"
+    local PACKAGE_PATH="${PACKAGES_DIR}/${CURRENT_PACKAGE}-lts"
+    cp -r ${SOURCE_DIR} ${PACKAGE_PATH}
+
+    # 1. pubspec
+    $SED_INLINE "s|name: ffmpeg_kit_flutter|name: ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/pubspec.yaml
+    $SED_INLINE "s|version: .*|version: $VERSION-LTS|g" ${PACKAGE_PATH}/pubspec.yaml
+    rm -f ${PACKAGE_PATH}/pubspec.yaml.tmp
+
+    # 2. android
+    $SED_INLINE "s|minSdkVersion.*|minSdkVersion 16|g" ${PACKAGE_PATH}/android/build.gradle
+    $SED_INLINE "s|com.arthenica:.*|com.arthenica:ffmpeg-kit-$CURRENT_PACKAGE:$NATIVE_VERSION.LTS'|g" ${PACKAGE_PATH}/android/build.gradle
+    rm -f  ${PACKAGE_PATH}/android/build.gradle.tmp
+
+    # 3. ios
+    $SED_INLINE "s|ffmpeg_kit_flutter|ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec
+    $SED_INLINE "s|s.version.*|s.version = '$VERSION.LTS'|g" ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec
+    $SED_INLINE "s|s.default_subspec.*|s.default_subspec = '$CURRENT_PACKAGE-lts'|g" ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec
+    rm -f  ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec.tmp
+    mv ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter.podspec ${PACKAGE_PATH}/ios/ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME.podspec
+
+    # 4. macos
+    $SED_INLINE "s|ffmpeg_kit_flutter|ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME|g" ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec
+    $SED_INLINE "s|s.version.*|s.version = '$VERSION.LTS'|g" ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec
+    $SED_INLINE "s|s.default_subspec.*|s.default_subspec = '$CURRENT_PACKAGE-lts'|g" ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec
+    rm -f  ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec.tmp
+    mv ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter.podspec ${PACKAGE_PATH}/macos/ffmpeg_kit_flutter_$FLUTTER_PACKAGE_NAME.podspec
+
+  done;
+
+  echo "lts releases created!"
+}
+
+if [[ $# -ne 2 ]];
+then
+    echo "Usage: create_package.sh <version name> <native library version>"
+    exit 1
+fi
+
+VERSION="$1"
+NATIVE_VERSION="$2"
+
+rm -rf "${PACKAGES_DIR}"
+mkdir -p "${PACKAGES_DIR}"
+
+prepare_inline_sed
+
+create_main_releases;
+
+create_lts_releases;
+
+cp -r "${BASEDIR}/flutter/flutter_platform_interface" "$PACKAGES_DIR"