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I may be doing this wrong, but there seems to be little documentation on MP4 tagging in general. From what I understand, the standard MP4 genre key does not support multiple values. I have noticed programs like mp3tag and foobar2000 work around this by storing multiple genres using a freeform key. The issue I am running into is the way mutagen saves multiple genres using similar code to this:
This appears to mimic the other programs when using the mutagen library. However, there are differences in how the tags are stored:
mutagen
mp3tag
I apologize if I'm missing something obvious.
The text was updated successfully, but these errors were encountered:
ghost
changed the title
MP4: Using Freeform to Store Multiple Genres (like mp3tag and foobar2000)
MP4: Using Freeform Key to Store Multiple Genres (like mp3tag and foobar2000)
Jan 25, 2022
How multiple values for a tag should be handled in MP4 is not well-defined. mutagen uses a different approach then foobar2000, though. That's what you notice there. For a more in-depth discussion of this see
I may be doing this wrong, but there seems to be little documentation on MP4 tagging in general. From what I understand, the standard MP4 genre key does not support multiple values. I have noticed programs like mp3tag and foobar2000 work around this by storing multiple genres using a freeform key. The issue I am running into is the way mutagen saves multiple genres using similar code to this:
This appears to mimic the other programs when using the mutagen library. However, there are differences in how the tags are stored:
mutagen
mp3tag
I apologize if I'm missing something obvious.
The text was updated successfully, but these errors were encountered: