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Fix channel worker stalling when stopping ffmpeg with unread stdout
2026-10-09 08:38:12 +02:00

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# Changelog
All notable changes to this project are documented in this file.
## [0.1.0] - Unreleased
### Added
- Initial implementation: yt-dlp based resolver (merging separate video/audio renditions when YouTube serves a live
stream split that way), ffmpeg restreaming, per-channel supervisor worker with proactive URL-expiry refresh and
reactive restart-with-backoff, broadcast fan-out to multiple HTTP clients, aiohttp server exposing an M3U playlist
and per-channel MPEG-TS streams for Jellyfin Live TV.
- Docker Compose deployment (`Dockerfile`, `docker-compose.yml`) and configuration templates
(`channels.example.yaml`, `.env.example`).
- Gitea Actions CI (`.gitea/workflows/ci.yml`): ruff, mypy and pytest, then native `amd64` and `arm64` image builds on
separate runners (no emulation), merged into one multi-arch tag (`:devel` from `devel`, `:latest` from `release`,
plus a commit-SHA tag). Per-architecture tags carry an `-amd64` / `-arm64` suffix.
- Unit test suite covering config parsing, URL expiry parsing, ffmpeg argument building, playlist generation, and
broadcast fan-out.
### Fixed
- Stopping ffmpeg (on every proactive URL refresh) no longer stalls. The worker stops reading ffmpeg's stdout when it
breaks out to refresh, and asyncio's `Process.wait()` does not return until every pipe reaches EOF, so `stop()` always
ran into the terminate timeout ("did not exit in time, killing it") and could leave a channel worker stuck for good,
silently ending that channel's stream. `stop()` now drains the leftover stdout while waiting for ffmpeg to exit.
- `/stream/{channel_id}` now forces the connection closed after each response (`Connection: close`) instead of
allowing keep-alive. Jellyfin's M3U tuner client (`SharedHttpStream`) was reusing a pooled keep-alive connection
still mid-stream from an earlier request and reading raw MPEG-TS bytes as if they were a fresh HTTP response,
failing with "Received an invalid status line".
- The yt-dlp resolver now correctly classifies which of the two `requested_formats` entries is audio when a live
stream is split into separate video-only and audio-only renditions; it previously relied on `acodec` being set,
which yt-dlp does not consistently do for audio-only formats, causing every resolve to fail.