I have an M4A file created in ffmpeg that has chapters in it. I load the file into mp3tag and that shows the file has only MP4 tags i.e. it displays MP4 (MP4) in the Tag column. I change the Artist field because the name is incorrect, and I save the tag. Now the Tag field displays MP4 (MP4 Nero). …

Additional test on the same starting file: I used ffmpeg -map_chapters -1 to remove the chapter information when making a copy, and then make the same change to the tags. The Tag field still displays MP4 (MP4). In other words, the Nero tags are NOT added if there is NO chapter information, and the…

Here is a thread on chapter generation: [image] Request: Option to disable auto MP4 chapter generation General Discussion Would it be possible to have an option to disable the MP4 chpl chapter generation (mentioned in your comment here ) introduced with v2.92? It's very min…

@Florian Can you elaborate on this? [image] Request: Option to disable auto MP4 chapter generation General Discussion I've changed this behavior with Mp3tag v2.93a , so that no chpl atom is created automatically if Apple gapless data is found. Thanks for bringing this to m…

[image] markf: the Nero tags are NOT added if there is NO chapter information, and the Nero tags ARE added if there IS chapter information. Yes, this is how it's implemented at the moment. I went that route to be most compatible with foobar2000, which is using a similar approach (at least at …

Nero tag created when making minimal change to M4A file with chapters

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ohrenkino February 10, 2022, 12:37pm 3

Here is a thread on chapter generation:

Don't know, whether it helps. though.