Avidemux+cannot+use+that+file+as+audio+track Jun 2026

You’ve selected an external audio file (like an MP3, WAV, or AAC) to replace or merge with your video’s audio, but Avidemux refuses to cooperate. Why? And more importantly, how do you fix it?

💡 Avidemux works best with PCM WAV or AC3 for external tracks. MP3/M4A almost always triggers that error. avidemux+cannot+use+that+file+as+audio+track

Since transcoding is happening anyway, the feature could include a checkbox in the dialog: This solves the common secondary problem where external audio files are too quiet or loud compared to the video. You’ve selected an external audio file (like an

When you add an external audio track, Avidemux does not want to transcode it on the fly. It wants to the audio stream directly into the output container (MKV, MP4, AVI). For this to work, three conditions must be met: 💡 Avidemux works best with PCM WAV or

Getting “cannot use that file as audio track” in Avidemux?