Set the main window's "Audio Output" to (if compatible) or MP3/AAC (if you want to re-encode). If you'd like to troubleshoot further, let me know:
Import your problematic audio or container file into the timeline.
Your audio file might be the correct type (e.g., MP3) but is not in a raw state. The table below breaks down the problem and provides a clear, step-by-step path to a solution. avidemux cannot use that file as audio track
The error typically occurs because Avidemux requires external audio files to be in a raw stream format rather than a container format . While the software can handle containers like MP4 or MKV for video, it lacks the internal demuxers to unpack external audio tracks stored inside those same containers. Why the Error Occurs
Sometimes, the issue might not be with the file itself but with how Avidemux is configured or a bug in the version you're using. Set the main window's "Audio Output" to (if
The error is not a bug—it’s a strict compatibility check. Avidemux prioritizes stability and standards compliance over flexibility. The good news is that the fix is almost always simple: either re-encode your audio to the correct format (Fix #1) or switch to a more forgiving container (Fix #2).
The quickest fix is to tell Avidemux to the external audio track into a compatible format. The table below breaks down the problem and
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The audio codec might not be compiled into your version of Avidemux, or it's an advanced format not yet supported. avidemux.org The "How": Quick Solutions Use Nightly Builds: Make sure you are using the latest Avidemux 2.8.x nightly build Convert to RAW: or FFmpeg to re-export your audio as raw AAC, WAV, or MP3. Ensure CBR: