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0b61d3ab08
* videos: codec download preferences with transcode and strict-fail options
Add video_codecs/audio_codecs ordered preference lists to the video,
channel, and RSS downloaders, alongside the existing resolution
selector. Codec preference is codec-major: a preferred codec at a
lower resolution beats another codec at a higher resolution.
When 'transcode' is enabled, a downloaded file whose streams do not
match the preferences is re-encoded with ffmpeg after download (only
the mismatching stream; targets are extensible maps, currently h264
and aac/opus/mp3). When 'strict_codecs' is enabled and transcode is
not, a download with no matching format fails permanently instead of
falling back.
Empty codec lists produce a byte-identical yt-dlp command to before.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* videos: honor strict_codecs when transcode cannot produce the preference
Review fixes:
- strict_codecs is now suppressed only when transcoding can produce a
preferred codec for every non-empty preference list (new
transcode_can_satisfy_codecs); av1-only preferences with transcode
enabled fail under strict instead of silently keeping the file.
- No partial transcode: an unfixable video mismatch blocks an
audio-only conversion (and vice versa); the mismatch falls through
to strict/keep.
- fsync the transcode output before rename, and the directory after,
so power loss on a Pi cannot leave a truncated final file.
- mp3 yt-dlp pattern matches mp4a.6B as well as mp4a.6b.
- ffmpeg maps use 0:V:0 (excludes attached pictures) and 0🅰️0?
(tolerates missing audio).
- Strict toggle is no longer disabled by transcode in the UI; popup
wording corrected.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* videos: serialize transcodes machine-wide via shared_ctx lock
Sanic runs multiple worker processes, so an asyncio primitive cannot
serialize transcodes across download workers. A multiprocessing.Lock
in shared_ctx now guarantees only one ffmpeg transcode runs at a time
on the machine; waiting workers poll the lock asynchronously so the
event loop stays responsive while a transcode holds it for hours.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* videos: transcode-lock review fixes
- Document that a crashed lock holder requires an API restart; this is
accepted rather than adding owner-death recovery.
- Move the 'Transcoding' user notification to after the lock is
acquired, so it fires when work begins rather than before a
potentially hours-long wait.
- Soften the lock test docstring to what it measures (in-process
wait/release); trim the acquire docstring to the polling rationale.
- Give transcode_lock its own section header in contexts.py.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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||
|---|---|---|
| .. | ||
| channel | ||
| test | ||
| video | ||
| __init__.py | ||
| api.py | ||
| common.py | ||
| conftest.py | ||
| cookies.py | ||
| downloader.py | ||
| errors.py | ||
| lib.py | ||
| models.py | ||
| normalize_video_url.py | ||
| schema.py | ||
| transcode.py | ||