# FFmpegKit for React Native
### 1. Features
- Includes both `FFmpeg` and `FFprobe`
- Supports
- Both `Android` and `iOS`
- 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 10` or later
- Can process Storage Access Framework (SAF) Uris on Android
- 25 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`, `zimg`
- 4 external libraries with GPL license
`vid.stab`, `x264`, `x265`, `xvidcore`
- `zlib` and `MediaCodec` Android system libraries
- `bzip2`, `iconv`, `libuuid`, `zlib` system libraries and `AudioToolbox`, `VideoToolbox`, `AVFoundation` system frameworks on iOS
- Includes Typescript definitions
- Licensed under LGPL 3.0, can be customized to support GPL v3.0
### 2. Installation
```sh
yarn add ffmpeg-kit-react-native
```
#### 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-react-native` 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-react-native` 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/arthenica/ffmpeg-kit#8-packages) section of the project README to see the names
of those packages and external libraries included in each of them.
##### 2.1.1 Package Names
The following table shows all package names and their respective API levels, iOS deployment targets defined in
`ffmpeg-kit-react-native`.
| Package |
Main Release |
LTS Release |
|
Name |
Android
API Level |
iOS Minimum
Deployment Target |
Name |
Android
API Level |
iOS Minimum
Deployment Target |
| min |
min |
24 |
12.1 |
min-lts |
16 |
10 |
| min-gpl |
min-gpl |
24 |
12.1 |
min-gpl-lts |
16 |
10 |
| https |
(*) https |
24 |
12.1 |
https-lts |
16 |
10 |
| https-gpl |
https-gpl |
24 |
12.1 |
https-gpl-lts |
16 |
10 |
| audio |
audio |
24 |
12.1 |
audio-lts |
16 |
10 |
| video |
video |
24 |
12.1 |
video-lts |
16 |
10 |
| full |
full |
24 |
12.1 |
full-lts |
16 |
10 |
| full-gpl |
full-gpl |
24 |
12.1 |
full-gpl-lts |
16 |
10 |
(*) - Main `https` package is the default package
#### 2.2 Enabling Packages
Installing `ffmpeg-kit-react-native` enables the `https` package by default. It is possible to enable other
packages using the instructions below.
##### 2.2.1 Enabling a Package on Android
- Edit `android/build.gradle` file and add the package name in `ext.ffmpegKitPackage` variable.
```gradle
ext {
ffmpegKitPackage = ""
}
```
##### 2.2.2 Enabling a Package on iOS
- Edit `ios/Podfile` file and add the package name as `subspec`. After that run `pod install` again.
```ruby
pod 'ffmpeg-kit-react-native', :subspecs => [''], :podspec => '../node_modules/ffmpeg-kit-react-native/ffmpeg-kit-react-native.podspec'
```
- Note that if you have `use_native_modules!` in your `Podfile`, specifying a `subspec` may cause the following error.
You can fix it by defining `ffmpeg-kit-react-native` dependency before `use_native_modules!` in your `Podfile`.
```
[!] There are multiple dependencies with different sources for `ffmpeg-kit-react-native` in `Podfile`:
- ffmpeg-kit-react-native (from `../node_modules/ffmpeg-kit-react-native`)
- ffmpeg-kit-react-native/video (from `../node_modules/ffmpeg-kit-react-native/ffmpeg-kit-react-native.podspec`)
```
#### 2.3 Enabling LTS Releases
In order to install the `LTS` variant, install the `https-lts` package using instructions in `2.2` or append `-lts` to
the package name you are using.
#### 2.4 LTS Releases
`ffmpeg-kit-react-native` 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/arthenica/ffmpeg-kit#9-lts-releases) section of the project README to see how they
compare to each other.
### 3. Using
1. Execute FFmpeg commands.
```js
import { FFmpegKit } from 'ffmpeg-kit-react-native';
FFmpegKit.execute('-i file1.mp4 -c:v mpeg4 file2.mp4').then(async (session) => {
const 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.
```js
FFmpegKit.execute('-i file1.mp4 -c:v mpeg4 file2.mp4').then(async (session) => {
// Unique session id created for this execution
const sessionId = session.getSessionId();
// Command arguments as a single string
const command = session.getCommand();
// Command arguments
const commandArguments = session.getArguments();
// State of the execution. Shows whether it is still running or completed
const state = await session.getState();
// Return code for completed sessions. Will be undefined if session is still running or FFmpegKit fails to run it
const returnCode = await session.getReturnCode()
const startTime = session.getStartTime();
const endTime = await session.getEndTime();
const duration = await session.getDuration();
// Console output generated for this execution
const output = await session.getOutput();
// The stack trace if FFmpegKit fails to run a command
const failStackTrace = await session.getFailStackTrace()
// The list of logs generated for this execution
const logs = await session.getLogs();
// The list of statistics generated for this execution (only available on FFmpegSession)
const statistics = await session.getStatistics();
});
```
3. Execute `FFmpeg` commands by providing session specific `execute`/`log`/`session` callbacks.
```js
FFmpegKit.executeAsync('-i file1.mp4 -c:v mpeg4 file2.mp4', session => {
// CALLED WHEN SESSION IS EXECUTED
}, log => {
// CALLED WHEN SESSION PRINTS LOGS
}, statistics => {
// CALLED WHEN SESSION GENERATES STATISTICS
});
```
4. Execute `FFprobe` commands.
```js
FFprobeKit.execute(ffprobeCommand).then(async (session) => {
// CALLED WHEN SESSION IS EXECUTED
});
```
5. Get media information for a file/url.
```js
FFprobeKit.getMediaInformation(testUrl).then(async (session) => {
const information = await session.getMediaInformation();
if (information === undefined) {
// CHECK THE FOLLOWING ATTRIBUTES ON ERROR
const state = FFmpegKitConfig.sessionStateToString(await session.getState());
const returnCode = await session.getReturnCode();
const failStackTrace = await session.getFailStackTrace();
const duration = await session.getDuration();
const output = await session.getOutput();
}
});
```
6. Stop ongoing FFmpeg operations.
- Stop all sessions
```js
FFmpegKit.cancel();
```
- Stop a specific session
```js
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:
```js
FFmpegKitConfig.selectDocumentForRead('*/*').then(uri => {
FFmpegKitConfig.getSafParameterForRead(uri).then(safUrl => {
FFmpegKit.executeAsync(`-i ${safUrl} -c:v mpeg4 file2.mp4`);
});
});
```
- Writing to a file:
```js
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`, `FFprobe` and `MediaInformation` sessions from the session history.
```js
FFmpegKit.listSessions().then(sessionList => {
sessionList.forEach(async session => {
const sessionId = session.getSessionId();
});
});
FFprobeKit.listFFprobeSessions().then(sessionList => {
sessionList.forEach(async session => {
const sessionId = session.getSessionId();
});
});
FFprobeKit.listMediaInformationSessions().then(sessionList => {
sessionList.forEach(async session => {
const sessionId = session.getSessionId();
});
});
```
9. Enable global callbacks.
- Session type specific Complete Callbacks, called when an async session has been completed
```js
FFmpegKitConfig.enableFFmpegSessionCompleteCallback(session => {
const sessionId = session.getSessionId();
});
FFmpegKitConfig.enableFFprobeSessionCompleteCallback(session => {
const sessionId = session.getSessionId();
});
FFmpegKitConfig.enableMediaInformationSessionCompleteCallback(session => {
const sessionId = session.getSessionId();
});
```
- Log Callback, called when a session generates logs
```js
FFmpegKitConfig.enableLogCallback(log => {
const message = log.getMessage();
});
```
- Statistics Callback, called when a session generates statistics
```js
FFmpegKitConfig.enableStatisticsCallback(statistics => {
const size = statistics.getSize();
});
```
10. Register system fonts and custom font directories.
```js
FFmpegKitConfig.setFontDirectoryList(["/system/fonts", "/System/Library/Fonts", ""]);
```
### 4. Test Application
You can see how `FFmpegKit` is used inside an application by running `react-native` test applications developed under
the [FFmpegKit Test](https://github.com/arthenica/ffmpeg-kit-test) project.
### 5. Tips
See [Tips](https://github.com/arthenica/ffmpeg-kit/wiki/Tips) wiki page.
### 6. License
See [License](https://github.com/arthenica/ffmpeg-kit/wiki/License) wiki page.
### 7. Patents
See [Patents](https://github.com/arthenica/ffmpeg-kit/wiki/Patents) wiki page.