Add ARM linux ffmpeg build (#3462)

Summary: Pull Request resolved: https://github.com/pytorch/audio/pull/3462

Differential Revision: D47270241

Pulled By: mthrok

fbshipit-source-id: 6a3b02380dfb381ffb47c1f46b46f4833c765246

.github/workflows/ffmpeg.yml

@@ -13,15 +13,15 @@ on:
     - cron: '0 0 * * 0'  # on sunday
 
 jobs:
-  Linux-LGPL:
+  LGPL-Linux-x86_64:
     strategy:
       fail-fast: false
       matrix:
         ffmpeg_version: ["4.1.8", "5.0.3", "6.0"]
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with:
-      job-name: Build LGPL FFmpeg for Linux
-      upload-artifact: ffmpeg-linux-lgpl
+      job-name: Build
+      upload-artifact: ffmpeg-lgpl
       repository: pytorch/audio
       script: |
         export FFMPEG_VERSION="${{ matrix.ffmpeg_version }}"
@@ -31,11 +31,36 @@ jobs:
         cd "${FFMPEG_ROOT}/.."
         tar -cf ffmpeg.tar.gz ffmpeg/include ffmpeg/lib
 
-        artifact_dir="${RUNNER_ARTIFACT_DIR}/$(date +%Y-%m-%d)/linux/"
+        artifact_dir="${RUNNER_ARTIFACT_DIR}/$(date +%Y-%m-%d)/linux_x86_64/"
         mkdir -p "${artifact_dir}"
         mv ffmpeg.tar.gz "${artifact_dir}/${FFMPEG_VERSION}.tar.gz"
 
-  macOS-LGPL:
+  LGPL-Linux-aarch64:
+    strategy:
+      fail-fast: false
+      matrix:
+        ffmpeg_version: ["4.1.8", "5.0.3", "6.0"]
+    uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
+    with:
+      job-name: Build
+      upload-artifact: ffmpeg-lgpl
+      repository: pytorch/audio
+      runner: "linux.t4g.2xlarge"
+      no-sudo: true
+      docker-image: quay.io/pypa/manylinux2014_aarch64
+      script: |
+        export FFMPEG_VERSION="${{ matrix.ffmpeg_version }}"
+        export FFMPEG_ROOT="${PWD}/third_party/ffmpeg"
+        ./packaging/ffmpeg/build.sh
+
+        cd "${FFMPEG_ROOT}/.."
+        tar -cf ffmpeg.tar.gz ffmpeg/include ffmpeg/lib
+
+        artifact_dir="${RUNNER_ARTIFACT_DIR}/$(date +%Y-%m-%d)/linux_aarch64/"
+        mkdir -p "${artifact_dir}"
+        mv ffmpeg.tar.gz "${artifact_dir}/${FFMPEG_VERSION}.tar.gz"
+
+  LGPL-macOS:
     strategy:
       fail-fast: false
       matrix:
@@ -43,8 +68,8 @@ jobs:
         runner: ["macos-m1-12", "macos-12"]
     uses: pytorch/test-infra/.github/workflows/macos_job.yml@main
     with:
-      job-name: Build LGPL FFmpeg for macOS ("${{ matrix.runner }}")
-      upload-artifact: ffmpeg-macos-lgpl
+      job-name: Build
+      upload-artifact: ffmpeg-lgpl
       repository: pytorch/audio
       runner: "${{ matrix.runner }}"
       script: |
@@ -59,15 +84,15 @@ jobs:
         mkdir -p "${artifact_dir}"
         mv ffmpeg.tar.gz "${artifact_dir}/${FFMPEG_VERSION}.tar.gz"
 
-  Windows-LGPL:
+  LGPL-Windows:
     strategy:
       fail-fast: false
       matrix:
         ffmpeg_version: ["4.1.8", "5.0.3", "6.0"]
     uses: pytorch/test-infra/.github/workflows/windows_job.yml@main
     with:
-      job-name: Build LGPL FFmpeg for Windows
-      upload-artifact: ffmpeg-windows-lgpl
+      job-name: Build
+      upload-artifact: ffmpeg-lgpl
       repository: pytorch/audio
       script: |
         export FFMPEG_VERSION="${{ matrix.ffmpeg_version }}"