Update Remotion FFmpeg

The FFmpeg build recipes, Rust bindings and wrapper live in packages/compositor/ffmpeg. The compositor and wrapper use local Cargo dependencies, and updates are reviewed in a single Remotion pull request.

Collect and import

Use the full source commit SHA for the intended FFmpeg build.

Explicitly trigger the CircleCI pipeline on the branch containing that commit using the web app's Trigger Pipeline button or the API. No parameters are needed: the workflow only runs for pipeline.trigger.type == "api", which covers both methods. See the trigger instructions. Wait for its five jobs and the macOS GitHub Actions build for the same commit to succeed. Then collect artifacts from the Remotion repository root:

node packages/compositor/ffmpeg/collect-artifacts.mjs --sha <full-source-sha>

The collector requires successful GitHub Actions and CircleCI builds for that same SHA. Do not combine runs or fill missing targets from an older build. Keep the returned MANIFEST.json and SHA256SUMS with the seven archives.

Upload the verified archives to a new immutable directory on remotion.media using the repository's R2 upload workflow. Never overwrite an existing release directory. Then run: