A yt-dlp source pointing at a label/artist page flat-extracts to a mix of
/track/ and /album/ URLs. The provider used each verbatim as a locator, so an
/album/ URL was handed to the fetcher as if it were a track: yt-dlp then
(mis)downloaded the whole album into one file and tagged it from the
playlist-level info, which carries the album title and no artist — surfacing as
"Unknown artist" on the stream.
Drill picked container entries down to a single track before emitting a
locator, bounded by a small depth so nested containers (label -> album ->
track) resolve while a real track (which flat-extracts to just itself) is the
base case. Locators are now always downloadable tracks, so the existing
tag/fetch path and anti-repeat keying work as intended.
Also make guess_metadata trust the explicit artist tag over the "Artist -
Title" title split: some label uploads double the artist into the title
("Artist - Artist - Title"), which the blind last-" - " split mis-parsed. When
that artist prefixes the title we peel it off (repeatedly), falling back to the
split only when there is no artist tag.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Pierre-Olivier Mercier
032a9b86b8