Use That File As Audio Track [upd] - Avidemux Cannot

To ensure compatibility, convert your audio file to a "safer" format before importing.

A minor header corruption or an incomplete download can cause Avidemux to fail during initial parsing. If FFmpeg (the backend) cannot read the file’s duration or codec info within a few milliseconds, Avidemux gives up. avidemux cannot use that file as audio track

Avidemux is optimized for linear video cutting and multiplexing rather than acting as a full-fledged digital audio workstation. When handling an external audio file via the menu, it enforces strict limitations: To ensure compatibility, convert your audio file to

Use a converter like Audacity , FFmpeg , or an online converter. Settings: Convert to MP3, 44.1kHz or 48kHz, CBR. Result: Try loading this new file into Avidemux. Solution 2: Convert to WAV (Uncompressed) Avidemux is optimized for linear video cutting and

Use ffmpeg (command line) or Audacity to convert: