How Are ID3 Tags Processed - Rello/audioplayer GitHub Wiki

The scanner is processing the ID3v2 information in UTF-8 of an audio file. The following fields are extracted:

• Title
• Subtitle
• Artist
• Album Artist
• Composer
• Album
• Genre
• Year
• Disc Number
• Track Number
• Bitrate (kBit/s)
• Attached Picture (covers)
• ISRC^[1][2]
• Copyright

During the scan the following logic is stored in the database:

• if album artist is maintained in track, it is stored for the album
• if multiple album artists are maintained in the tracks, "Various Artists" ist stored

During the display of the album cover art view, the following logic applies:

• check if an album artist (including "Various") is stored for the album => display as album artist
• if no album artist exists, load all artists from the tracks of the album
• if all the same artists => display as album artist
• if there is more than one artist => display "various" as album artist

• The cover from the folder of the audio file is searched in the following sequence:
  cover.jpg –> cover.png –> folder.jpg –> folder.png
• If no folder image is found, ID3 tags are searched for included cover arts.