2019-07-01, 17:04
Meanwhile chatting to Spiff he confirmed that ffmpeg has issues with parsing Matroska tags, in particular it is not picking up the ALBUM tag.
@HomerJau in case you are interested he used mkvextract to look at the metadata, output for a sample file is here https://pastebin.com/BRY957vW . ALBUM and TITLE tags are both <Name>TITLE</Name> in Matroska, but <TargetTypeValue> 50 is the album name , <TargetTypeValue>30 is the song title, and ffmpeg is not dealing with that.
@HomerJau in case you are interested he used mkvextract to look at the metadata, output for a sample file is here https://pastebin.com/BRY957vW . ALBUM and TITLE tags are both <Name>TITLE</Name> in Matroska, but <TargetTypeValue> 50 is the album name , <TargetTypeValue>30 is the song title, and ffmpeg is not dealing with that.
