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

This replaces the audio track without ever opening Avidemux.

ffmpeg -i input_problem_audio.m4a -c copy output_friendly.aac avidemux cannot use that file as audio track

In conclusion, “Avidemux cannot use that file as an audio track” is not a failure of the software but a boundary condition. It delineates what Avidemux is not : a universal transcoder or a container-agnostic muxer. By rejecting incompatible audio, it protects the user from desynchronized lips, glitched exports, and corrupted files. For the aspiring video editor, encountering this error is a rite of passage—a prompt to learn about codecs, containers, and the quiet, essential labor that software performs when it says, politely but firmly, “I cannot work with that.” This replaces the audio track without ever opening Avidemux

ffmpeg -i input.mka -c copy output.mp3