Two categories of issues: ERROR: RIFF data size X differs from adjusted file size Y; ID3… ERROR: Unsupported format or corrupted file; After using a hex editor, the causes: for 1st, RIFF chunk size does not include the ID3 tags after ‘data’ for 2nd, JUNK chunk size is 1024, but in reality it’s …

I'm unclear why you think that Mp3tag should support these two fixes. There are already free programs that can repair all sorts of corruption in WAV files. From what I have read, they work very well. Have you tried them? Fix a Corrupt Wav Audio File in Audacity - Data Recovery Using VLC How To …

[image] Doug_Mackie: There are already free programs that can repair all sorts of corruption in WAV files. and: [image] User-defined Tools FAQ (Frequently Asked Questions) Example — Re-encode WAV using ffmpeg Some WAV files have an invalid structure or e…

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Many .WAV files are in "ERROR: ..."

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poster April 17, 2026, 6:06am 3

Doug_Mackie:

There are already free programs that can repair all sorts of corruption in WAV files.

and:

User-defined Tools FAQ (Frequently Asked Questions)

Example — Re-encode WAV using ffmpeg Some WAV files have an invalid structure or extra junk bytes at some RIFF chunks so re-encoding the file might fix the problems. You can use the excellent ffmpeg command line utility as a user-defined tool from within Mp3tag. [Convert using ffmpeg as a user-defined tool] Name wav2wav Path Please locate the path of your ffmpeg.exe Parameter -i "%_filename_ext%" "%_folderpath%\%_filename%_out.wav"

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