Options (quality, subtitles) are now derived from a yt-dlp -J probe of
the submitted URL instead of a static list, so users can't pick
combinations the source video doesn't actually support. Submission is
blocked until the probe succeeds.
- New /api/probe endpoint + src/lib/ytdlp-probe.ts, with its own rate
limiter (rate-limit.ts refactored into a createRateLimiter factory).
- New options: subtitle language selection, clip start/end trim, MP3
audio quality.
- Fixed buildYtdlpArgs: format=mp3 never triggered audio extraction
(-x/--audio-format), and quality=best never applied --merge-output-format,
so the chosen container had no real effect.
- Cross-platform yt-dlp invocation: the bundled bin/yt-dlp is a Python
zipapp relying on a shebang, which Windows' spawn() can't run
directly. buildYtdlpCommand() runs it through `python` on Windows and
execs it directly on Linux/o2switch, where the shebang works natively.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
anthonyandClaude Sonnet 5