# "ERROR: Unsupported format or corrupted file" MP3 Diags says: "No MPEG audio stream found"

**URL:** https://community.mp3tag.de/t/error-unsupported-format-or-corrupted-file-mp3-diags-says-no-mpeg-audio-stream-found/60567
**Category:** Support
**Created:** [March 31, 2023, 8:07pm UTC](https://community.mp3tag.de/t/error-unsupported-format-or-corrupted-file-mp3-diags-says-no-mpeg-audio-stream-found/60567 "2023-03-31T20:07:11Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 31, 2023, 8:09pm UTC](https://community.mp3tag.de/t/error-unsupported-format-or-corrupted-file-mp3-diags-says-no-mpeg-audio-stream-found/60567/2 "2023-03-31T20:09:19Z")

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Did you transform them with some kind of online source?  
So that they are actually mp4 files with the wrong extension?  
Like here:

> [@MP3 Tag Not Visible in File Explorer in Windows 10](https://community.mp3tag.de/t/mp3-tag-not-visible-in-file-explorer-in-windows-10/56981):
>
> I have edited several MP3 files using MP3TAG, however none of the edits I made are showing up in the File Explorer for Windows 10.

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