Avidemux+cannot+use+that+file+as+audio+track

: Avidemux cannot invoke demuxers for external audio tracks. If you try to add an .m4a or .mp4 file as an external track, it will fail because these are containers, not raw streams.

Even with a perfectly prepared audio file, the correct method to add it isn't through File -> Open . Avidemux is not designed to load audio-only files that way. You must do it via the Audio menu.

If the audio is slightly longer/shorter, you may need to use the "Audio Shift" feature in Avidemux after successfully loading the file. Best Practices to Avoid This Error

– you may have accidentally chosen a video file as the audio source

Once your file is converted or remuxed, follow these exact steps to add it to your video project without errors: avidemux+cannot+use+that+file+as+audio+track

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If you do not want to use command-line utilities, you can use a free audio editor like Audacity. Converting the source file to an uncompressed, metadata-free PCM .wav profile will bypass the file verification check in Avidemux.

The "Cannot use that file as audio track" error in Avidemux, while a nuisance, is almost always a symptom of a file format or workflow issue. By understanding that Avidemux needs raw audio streams and is easily confused by modern audio containers, you're already most of the way to a solution.

If the audio file is meant for a specific video and you have altered the video's Frame Per Second (FPS) in Avidemux, the audio track may fail to load because of duration mismatches. : Avidemux cannot invoke demuxers for external audio tracks

If you suspect metadata is the issue, you can try "cleaning" the file by running it through a simple converter or a metadata stripper. Removing the first several bytes of a file that contains Traktor metadata has been known to fix rejection issues.

What (Windows, Mac, Linux) are you running?

This usually happens when you've added the track as a secondary audio track instead of replacing the primary one. Go to Audio → Select Track and ensure the original track is disabled (unchecked), or set your video player to the correct audio track. In the Avidemux forum, one user's solution was to add the audio track correctly and configure their player to select it, or to disable the internal track entirely if they wanted to replace it.

ffmpeg -i video.mp4 -vn -ar 48000 -ac 2 audio_for_avidemux.wav Avidemux is not designed to load audio-only files that way

To fix the "Cannot use that file as audio track" error in Avidemux, you typically need to convert your audio into a raw format or a simpler container. Avidemux often fails to import audio tracks that are already muxed into modern containers like avidemux.org 1. Unsupported File Containers

The most reliable solution is to transcode your source audio file into a highly compatible, standard format before importing it into Avidemux. Free tools like Audacity or HandBrake work well, but is the fastest command-line method.

What your current audio file uses (e.g., .mp3 , .m4a , .flac )