Files
91/backend/internal/transcode
nianzhibai 4dd9015bd7 feat: add per-storage manual transcode for browser-incompatible videos
Add a transcode control to each storage in the admin drives page,
modeled after the cover/preview generation controls:

- Manual start/stop button per storage; transcoding is off by default
  and never runs automatically (not triggered by scans or the nightly
  pipeline)
- New transcode worker probes candidates (non mp4/webm extensions)
  with ffprobe: already-compatible files are marked skipped; AVI with
  H.264 is remuxed losslessly; incompatible codecs (MPEG-4 Part 2,
  WMV, RMVB, HEVC...) are transcoded to H.264/AAC MP4 with +faststart
- Transcoded output is uploaded back to the same storage under a
  "91转码" directory which is auto-added to the drive's scan skip list
  so the scanner never re-imports the artifacts
- Playback source automatically prefers the transcoded file once
  ready, keeping the 302 direct-link mode for cloud drives
- videos table gains transcode_status/error/file_id/size columns via
  startup migration; counts and live task status surface in the
  admin drives API and generation panel UI
- Stop semantics: per-drive stop button, drive-level "stop all tasks"
  and global stop all include the transcode task; interrupted videos
  keep their candidate status and resume on next start

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-13 09:41:08 +08:00
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