Avidemux Cannot Use That File As Audio Track _verified_ — Newest & Simple

The "Avidemux cannot use that file as audio track" error can occur due to several reasons:

as external tracks, rather than audio files wrapped in "containers" like MP4, M4A, or MKV avidemux.org Why This Happens avidemux cannot use that file as audio track

The error is almost always a metadata or bitrate formatting issue. By converting your audio to a Constant Bitrate (CBR) format or forcing Avidemux to re-encode the audio (rather than using "Copy" mode), you can usually resolve the conflict in seconds. The "Avidemux cannot use that file as audio

Sometimes the file itself is fine, but the header is messy. Use FFmpeg to "remux" the file without changing quality. Use FFmpeg to "remux" the file without changing quality

If you do not want to convert your audio file to MP3 because you want to preserve quality (e.g., you have a high-bitrate AAC file), you can try changing the of your project.

If you are trying to use a very modern or obscure codec (like Opus or certain flavors of AAC), Avidemux might not have the specific demuxer needed for that standalone file. Converting to or WAV usually solves this. 📥 How to Properly Add an Audio Track Once you have your compatible file (preferably WAV or MP3): Open your video file in Avidemux. Click the Audio menu at the top. Select Select Track . Find an empty track (or the one you want to replace). Click the dropdown menu and select Add audio track . Browse to your file and click Open .