Fetching artwork

This page contains implementation details on how automatic album art fething works.

TLDR: If track contains MBID, component will try using it. If not, it will try to find MBID by album and artist.

Algorithm

When artwork is requested, component does the following:

• Check if track contains either MUSICBRAINZ_ALBUMID or MUSICBRAINZ ALBUM ID tag (malformed tags are skipped) and use it as MBID for next steps.
• If track does not contain MBID tag, then try to find MBID by album and artist via MusicBrainz API:
  • Find release group: https://www.musicbrainz.org/ws/2/release-group?artist:"{ARTIST}"+releasegroup:"{ALBUM}".
  • Select the first release-groups from response and try to find entry in releases that contains artwork:
    • Get release info: https://www.musicbrainz.org/ws/2/release/{MBID}.
    • Check if cover-art-archive[artwork] is true.
• Fetch album art url from Cover Art Archive:
  • http://coverartarchive.org/release/{MBID}/front-1200