Avidemux Cannot Use That File As Audio Track May 2026

Troubleshooting "Avidemux Cannot Use That File as Audio Track" Error: A Comprehensive Guide

Solutions to the Error

Common causes

Using Audacity (Free):

• Example: Video = video.mp4 (H.264), External Audio = song.mp3 (MP3). Avidemux tries to copy MP3 into MP4 → Error.

Additional Tips and Tricks

1. Incompatible Audio File Format

Avidemux supports a variety of audio and video formats, but it's not exhaustive. The most commonly supported audio formats include WAV, MP3, and AAC. If your audio file is in a less common format, Avidemux might not support it. avidemux cannot use that file as audio track

1. Open video in Avidemux. Note its audio sample rate (bottom status bar or Audio menu).
2. Convert your external audio file to 16-bit stereo PCM WAV at the same sample rate (e.g., 48000 Hz).
3. In Avidemux: Audio → Select Track → External Track and choose the new WAV file.
4. Set Output Format to MP4 Muxer or MKV. Avoid AVI for external audio.