The error “Avidemux cannot use that file as audio track” is Avidemux’s polite way of saying “give me a simple, standard audio file.” Convert your audio to or CBR MP3 , and Avidemux will happily accept it.
. Avidemux generally requires external audio tracks to be in raw or specific formats like WAV, MP3, or AC3 to properly mux them with video. Common Causes Unsupported Containers : You are trying to load an avidemux cannot use that file as audio track
file that is actually an MP4 container without video. Avidemux cannot invoke demuxers for external tracks in these formats. Metadata Interference The error “Avidemux cannot use that file as
Certain MP3 files with specialized metadata (like Traktor tags) can confuse the software, causing it to misinterpret the file's structure. Common Causes Unsupported Containers : You are trying
Alternatively, you can mux the audio and video together directly in FFmpeg to bypass Avidemux entirely: