Avidemux Cannot Use That File As Audio Track 95%

One user discovered that "Traktor metadata at the head of the file confuses Avidemux (it misinterprets parts of it as MP3 frame headers)". Stripping these tags is a common fix.

When you point Avidemux to an MP4 file with a .m4a extension, you are giving it a box. It doesn't have the built-in tools to open that box to get to the audio inside. The official documentation and moderators on the Avidemux forum have repeatedly confirmed this: Avidemux can only use raw streams as external audio tracks and cannot use audio-only MP4 (M4A) containers, as its demuxer plugins do not support files without a video track. avidemux cannot use that file as audio track

Here’s a structured diagnostic and troubleshooting report based on the error message: One user discovered that "Traktor metadata at the