# Mp3tag showing “wrong” metadata on M4B files

**URL:** https://community.mp3tag.de/t/mp3tag-showing-wrong-metadata-on-m4b-files/69322
**Category:** Support
**Created:** [August 6, 2025, 7:33am UTC](https://community.mp3tag.de/t/mp3tag-showing-wrong-metadata-on-m4b-files/69322 "2025-08-06T07:33:33Z")
**Posts on this page:** 1
**Showing post:** 15

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [August 7, 2025, 3:27pm UTC](https://community.mp3tag.de/t/mp3tag-showing-wrong-metadata-on-m4b-files/69322/15 "2025-08-07T15:27:44Z")

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I've written a separate topic on the current state of iTunes/QuickTime and Nero metadata for MP4/M4A/M4B in Mp3tag, with the intention to answer all questions and shed some light into the issues described in this topic:

> [@MP4/M4A/M4B: iTunes/QuickTime and Nero metadata](https://community.mp3tag.de/t/mp4-m4a-m4b-itunes-quicktime-and-nero-metadata/69341):
>
> Mp3tag supports two tag formats for MP4/M4A/M4B: iTunes/QuickTime and Nero metadata. When writing metadata, Mp3tag tries to only use iTunes/QuickTime metadata if possible, but writes Nero metadata in the following circumstances: The file already contains Nero metadata. Mp3tag then updates both metadata formats with the updated contents. The file contains QuickTime chapters. Mp3tag can't edit QuickTime chapters at the moment — only reading and removing QuickTime chapters is supported. On w…

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_[View the full topic](https://community.mp3tag.de/t/mp3tag-showing-wrong-metadata-on-m4b-files/69322)._