Avidemux Cannot Use That File As Audio Track -

Avidemux cannot demux external containers (like .m4a ) to use them as simple audio tracks. It treats .m4a as a video container without video, which it doesn't support as an external input.

The "Avidemux cannot use that file as audio track" error is not a bug but a feature of Avidemux's specialized design. It is an excellent tool for simple video cutting and copying, but its audio handling is very strict. By understanding the difference between containers and raw streams, and by pre-processing your audio with FFmpeg or Audacity, you can consistently and successfully add external audio tracks. If your workflow becomes too complex, however, do not hesitate to switch to a tool like Shutter Encoder or MKVToolNix for a more flexible approach. avidemux cannot use that file as audio track

| Solution | Method | Effectiveness | |----------|--------|----------------| | | Use FFmpeg: ffmpeg -i input.mp3 -ar 48000 -ac 2 output.wav (match video’s sample rate) | Highest | | Force CBR MP3 | ffmpeg -i input.mp3 -b:a 192k -ar 48000 output_cbr.mp3 | Moderate | | Remove leading silence | In Audacity or FFmpeg: ffmpeg -i input.mp3 -ss 0 -acodec copy output_fixed.mp3 | Rarely needed | | Re-encode video’s own audio | Instead of external track, use Avidemux’s “Audio > Select Track” to add from another video. | Workaround | Avidemux cannot demux external containers (like

: Certain codecs, such as Vorbis or specific AAC variants in proprietary Apple formats, may not be supported for external insertion without first being re-encoded or extracted. It is an excellent tool for simple video