diff --git a/.github/workflows/android-build-scripts.yml b/.github/workflows/android-build-scripts.yml
index e91cd46..b60e25a 100644
--- a/.github/workflows/android-build-scripts.yml
+++ b/.github/workflows/android-build-scripts.yml
@@ -85,7 +85,7 @@ jobs:
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
   build-main-on-macos:
     name: android main on macos
-    runs-on: macos-10.15
+    runs-on: macos-12
     strategy:
       matrix:
         ndk-version: [ 'r22b-darwin-x86_64', 'r23b-darwin', 'r24-darwin', 'r25b-darwin' ]
@@ -114,7 +114,7 @@ jobs:
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
   build-lts-on-macos:
     name: android lts on macos
-    runs-on: macos-10.15
+    runs-on: macos-11
     strategy:
       matrix:
         ndk-version: [ 'r22b-darwin-x86_64', 'r23b-darwin' ]
diff --git a/.github/workflows/ios-build-scripts.yml b/.github/workflows/ios-build-scripts.yml
index 729f983..29d8978 100644
--- a/.github/workflows/ios-build-scripts.yml
+++ b/.github/workflows/ios-build-scripts.yml
@@ -73,38 +73,15 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-main-on-macos-catalina:
-    name: ios main on catalina
-    runs-on: macos-10.15
+  build-lts-on-macos-bigsur:
+    name: ios lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '11.7', '12.4' ]
     defaults:
       run:
         shell: bash
-    steps:
-      - uses: actions/checkout@v2
-      - name: prerequisites
-        run: brew install autoconf automake libtool pkg-config curl git cmake nasm
-      - name: set up xcode
-        run: echo "export DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer" > ~/.xcode.for.ffmpeg.kit.sh
-      - name: run the build script
-        run: ./ios.sh --xcframework --enable-ios-audiotoolbox --enable-ios-avfoundation --enable-ios-bzip2 --enable-ios-libiconv --enable-ios-videotoolbox --enable-ios-zlib
-      - name: print build logs
-        if: ${{ always() }}
-        run: cat build.log
-      - name: print ffbuild logs
-        if: ${{ failure() }}
-        run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-lts-on-macos:
-    name: ios lts
-    runs-on: macos-10.15
-    strategy:
-      matrix:
-        xcode: [ '10.3', '11.7' ]
-    defaults:
-      run:
-        shell: bash
     steps:
       - uses: actions/checkout@v2
       - name: prerequisites
diff --git a/.github/workflows/macos-build-scripts.yml b/.github/workflows/macos-build-scripts.yml
index cfca086..fb2d35b 100644
--- a/.github/workflows/macos-build-scripts.yml
+++ b/.github/workflows/macos-build-scripts.yml
@@ -73,38 +73,15 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-main-on-macos-catalina:
-    name: macos main on catalina
-    runs-on: macos-10.15
+  build-lts-on-macos-bigsur:
+    name: macos lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '11.7', '12.4' ]
     defaults:
       run:
         shell: bash
-    steps:
-      - uses: actions/checkout@v2
-      - name: prerequisites
-        run: brew install autoconf automake libtool pkg-config curl git cmake nasm
-      - name: set up xcode
-        run: echo "export DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer" > ~/.xcode.for.ffmpeg.kit.sh
-      - name: run the build script
-        run: ./macos.sh --xcframework --enable-macos-audiotoolbox --enable-macos-avfoundation --enable-macos-bzip2 --enable-macos-coreimage --enable-macos-libiconv --enable-macos-opencl --enable-macos-opengl --enable-macos-videotoolbox --enable-macos-zlib
-      - name: print build logs
-        if: ${{ always() }}
-        run: cat build.log
-      - name: print ffbuild logs
-        if: ${{ failure() }}
-        run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-lts-on-macos:
-    name: macos lts
-    runs-on: macos-10.15
-    strategy:
-      matrix:
-        xcode: [ '10.3', '11.7' ]
-    defaults:
-      run:
-        shell: bash
     steps:
       - uses: actions/checkout@v2
       - name: prerequisites
diff --git a/.github/workflows/periodic-builds-apple.yml b/.github/workflows/periodic-builds-apple.yml
index 6099d07..d9d480b 100644
--- a/.github/workflows/periodic-builds-apple.yml
+++ b/.github/workflows/periodic-builds-apple.yml
@@ -31,9 +31,9 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-ios-lts-on-macos-catalina:
-    name: ios lts on catalina
-    runs-on: macos-10.15
+  build-ios-lts-on-macos-bigsur:
+    name: ios lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '12.4' ]
@@ -83,9 +83,9 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-macos-lts-on-macos-catalina:
-    name: macos lts on catalina
-    runs-on: macos-10.15
+  build-macos-lts-on-macos-bigsur:
+    name: macos lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '12.4' ]
@@ -135,9 +135,9 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-tvos-lts-on-macos-catalina:
-    name: tvos lts on catalina
-    runs-on: macos-10.15
+  build-tvos-lts-on-macos-bigsur:
+    name: tvos lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '12.4' ]
diff --git a/.github/workflows/tvos-build-scripts.yml b/.github/workflows/tvos-build-scripts.yml
index c5e3c0a..1169942 100644
--- a/.github/workflows/tvos-build-scripts.yml
+++ b/.github/workflows/tvos-build-scripts.yml
@@ -73,38 +73,15 @@ jobs:
       - name: print ffbuild logs
         if: ${{ failure() }}
         run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-main-on-macos-catalina:
-    name: tvos main on catalina
-    runs-on: macos-10.15
+  build-lts-on-macos-bigsur:
+    name: tvos lts on big sur
+    runs-on: macos-11
     strategy:
       matrix:
         xcode: [ '11.7', '12.4' ]
     defaults:
       run:
         shell: bash
-    steps:
-      - uses: actions/checkout@v2
-      - name: prerequisites
-        run: brew install autoconf automake libtool pkg-config curl git cmake nasm
-      - name: set up xcode
-        run: echo "export DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer" > ~/.xcode.for.ffmpeg.kit.sh
-      - name: run the build script
-        run: ./tvos.sh --xcframework --enable-tvos-bzip2 --enable-tvos-audiotoolbox --enable-tvos-libiconv --enable-tvos-videotoolbox --enable-tvos-zlib
-      - name: print build logs
-        if: ${{ always() }}
-        run: cat build.log
-      - name: print ffbuild logs
-        if: ${{ failure() }}
-        run: '[[ -f ./src/ffmpeg/ffbuild/config.log ]] && tail -50 ./src/ffmpeg/ffbuild/config.log'
-  build-lts-on-macos:
-    name: tvos lts
-    runs-on: macos-10.15
-    strategy:
-      matrix:
-        xcode: [ '10.3', '11.7' ]
-    defaults:
-      run:
-        shell: bash
     steps:
       - uses: actions/checkout@v2
       - name: prerequisites