Build FFmpeg for Windows / ARM64

Author: jlaine

.github/workflows/build-ffmpeg.yml

@@ -35,6 +35,9 @@ jobs:
           - os: windows-latest
             arch: AMD64
             shell: 'msys2 {0}'
+          - os: windows-11-arm
+            arch: ARM64
+            shell: 'msys2 {0}'
           - os: ubuntu-24.04-arm
             arch: aarch64
             shell: bash
@@ -54,12 +57,18 @@ jobs:
         run: |
           brew update
           brew unlink gettext libidn2 libpng libtiff libunistring libx11 libxau libxcb libxdmcp little-cms2 unbound
-      - uses: msys2/setup-msys2@c52d1fa9c7492275e60fe763540fb601f5f232a1
+      - uses: msys2/setup-msys2@v2
         if: matrix.os == 'windows-latest'
         with:
           install: base-devel mingw-w64-x86_64-gcc mingw-w64-x86_64-gperf mingw-w64-x86_64-nasm openssl-devel
           path-type: inherit
           release: false
+      - uses: msys2/setup-msys2@v2
+        if: matrix.os == 'windows-11-arm'
+        with:
+          install: base-devel mingw-w64-clang-aarch64-gcc-compat mingw-w64-clang-aarch64-gperf mingw-w64-clang-aarch64-nasm openssl-devel
+          path-type: inherit
+          release: false
       - name: Build FFmpeg
         env:
           CIBW_ARCHS: ${{ matrix.arch }}

scripts/cibuildpkg.py

@@ -32,7 +32,9 @@ def get_platform() -> str:
     elif system == "Darwin":
         return f"macosx_{machine}"
     elif system == "Windows":
-        if struct.calcsize("P") * 8 == 64:
+        if machine == "ARM64":
+            return "win_arm64"
+        elif struct.calcsize("P") * 8 == 64:
             return "win_amd64"
         else:
             return "win32"