Hello, I would appreciate your advice regarding a problem I encountered after editing an M4A file with Mp3tag. Environment Mp3tag version: 3.35 Operating System: Windows 11 File type: M4A (AAC) Windows Media Player language: Japanese Mp3tag interface language: Japanese What happen…

Without a sample file it is hard to say. Locally, I would check if the alleged mp4 file is really an mp4 file. See if e.g. Foobar2000 to check the consistency and optimize the file layout.

[image] BBB: or is there anything else I should investigate? This hint might help, too. [image] How to check files for errors? Howto It’s required and often helps to reduce support cycles to check files for errors before filing a bug report. Symptoms of…

Thank you for your advice! I’ll try checking the file with foobar2000.

Thank you for the helpful information! I’ll take a look and use it as a reference.

Windows Media Player cannot play an M4A file after editing the Album field in Mp3tag v3.35

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LyricsLover June 26, 2026, 6:40am 3

This hint might help, too.