In short, this error isn't usually a sign of a "broken" file, but rather a communication gap
Avidemux is not a full-fledged audio workstation. It has strict expectations for audio formats, codecs, and container structures when adding external tracks.
This usually happens when you are trying to add an external audio file (like an MP3, AAC, or WAV) to an existing video. If you’re stuck, Why Does This Error Happen?
Don't worry; we've got several solutions to help you resolve the "Avidemux cannot use that file as audio track" error. avidemux cannot use that file as audio track
Drag and drop both your and your external audio file into the "Source files" window.
The audio file is in a container or codec not fully supported, such as certain WAV, FLAC, or specialized Dolby formats.
: On Windows, search for "cmd". On macOS or Linux, open your Terminal application. In short, this error isn't usually a sign
Instead of adding an external track, use (GUI or command line) to merge your video + the external audio into a single MKV. Then open that MKV in Avidemux. Avidemux handles MKV’s internal audio tracks much better than external references.
In the dropdown, select , and browse to your file. Steps to Replace Audio in Avidemux
Open your terminal and run: ffmpeg -i input_audio.mp3 -c:a libmp3lame -q:a 2 output_fixed.mp3 If you’re stuck, Why Does This Error Happen
Go to (16-bit PCM is recommended).
The "Avidemux cannot use that file as audio track" error can usually be resolved by checking and possibly converting your audio file to a compatible format or adjusting settings within Avidemux. If issues persist, consider seeking help from Avidemux forums or communities for more specific advice.
: Certain codecs, such as Vorbis or specific AAC variants in proprietary Apple formats, may not be supported for external insertion without first being re-encoded or extracted.
When you're saving your project in Avidemux, you'll see an option for with choices like "Copy" or various encoders (AAC, MP3, etc.). A common mistake is trying to use the "Copy" mode when the original audio format isn't compatible with your chosen output container (e.g., MP4). If you get an error at this stage, the solution is to re-encode the audio to a compatible codec like AAC instead of using the "Copy" mode.
If none of the above solutions work, try using an alternative audio file: