Avidemux Cannot Use That File As Audio Track — Verified & Extended

You must extract the raw AAC stream into an using a tool like FFmpeg or a dedicated audio converter before Avidemux will recognize it. 3. Proper Insertion Workflow

Instead of adding the file as an external track immediately, try this: Open your video file. Go to . Check the box for the track you want to replace. In the dropdown, select Add audio track and pick your file.

When to seek alternatives

Tips to avoid the issue

You can use (free, open-source) or an online converter to transform your file: Open the problematic audio file in Audacity. avidemux cannot use that file as audio track

Avidemux cannot invoke its standard video/audio demuxers for an external file that contains structural container data. For example, an Advanced Audio Coding (AAC) file wrapped inside an Apple .m4a container includes metadata headers that confuse Avidemux. It requires a raw stream (like an ADTS-encapsulated AAC stream). Metadata Interference

Avidemux does not act as a full-featured digital audio workstation (DAW) or a complex video editor. It handles audio injection through rigid pipeline constraints: Container vs. Raw Stream Conflicts You must extract the raw AAC stream into

: On Windows, search for "cmd". On macOS or Linux, open your Terminal application.

Summary

The most reliable fix is to convert your audio file into a format Avidemux natively accepts using a tool like Audacity or VLC.