Hi everyone, I'm experiencing a strange issue with some .m4a (MP4) files. Windows Explorer and MusicBee display the same metadata, but Mp3tag shows completely different values for fields like Album, Artist, and Title. For example: Windows Explorer / MusicBee Album: - OK - Artist: George …

You could filter for %_tag% HAS Nero to see only the files with Nero tags.

Perhaps this thread sheds some light on the observation: [image] MP4/M4A/M4B: iTunes/QuickTime and Nero metadata Howto Mp3tag supports two tag formats for MP4/M4A/M4B: iTunes/QuickTime and Nero metadata. When writing metadata, Mp3tag tries to only use iTunes/Q…

Hi, thanks for information. I tried remove with the AtomicParsley, but my file doesn't contain moov.udta.tags. Instead it contains legacy Nero atoms (titl, albm, perf, gnre, yrrc) directly under moov.udta. --manualAtomRemove moov.udta.tags returns "No changes". Is there a supported way to remove t…

Mp3tag reads different MP4/M4A tags than Windows Explorer and MusicBee

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ohrenkino June 30, 2026, 4:26pm 2

Perhaps this thread sheds some light on the observation: