The error "Avidemux cannot use that file as audio track" 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

ffmpeg -i input.mp3 -acodec pcm_s16le -f wav output.wav

Recommended Formats: WAV (16-bit) is the most reliable for import because it is uncompressed. MP3 (Constant Bit Rate) is also widely supported.

1. Convert the audio to a friendly format (most reliable)

Use Audacity, FFmpeg, or XMedia Recode to convert your audio file to:

Steps to fix using an external converter (like Audacity or an online tool):

6. External Audio Track

• If you're trying to add an external audio track, ensure it's in a compatible format and codec. You can also try re-encoding this external track.

If your video project is set to a specific frequency (e.g., 48 kHz) and you attempt to add an audio track with a significantly different or non-standard rate, the software may fail to bridge the gap automatically. How to Fix It Transcode First:

The most reliable solution is to convert your audio file to a standard

“Avidemux Cannot Use That File as Audio Track”: Causes and Fixes

Avidemux is a powerful, lightweight video editor beloved for simple cutting, filtering, and encoding tasks. However, users often encounter a frustrating roadblock when trying to add an external audio track: