Avidemux+cannot+use+that+file+as+audio+track [OFFICIAL]

Go to Edit > Preferences and click Reset Settings. Close and reopen Avidemux. This clears any lingering configuration issues.

The Problem: Users often try to import audio files (like FLAC, OGG, or variable bitrate MP3s) that Avidemux cannot natively handle or index correctly for editing. The current error message ("Cannot use that file as audio track") is a hard stop, forcing the user to close Avidemux, use a third-party tool (like Audacity or FFmpeg) to convert the file to a compatible format (usually WAV), and then try again.

The Solution: A "Smart Audio Transcode & Inject" mechanism that automatically detects incompatible audio inputs and offers to convert them into a safe, editable format on the fly without leaving the Avidemux interface.

If your external audio file is shorter or longer than the video by a fraction of a second, Avidemux’s copy mode may panic.

The Fix: In Audio > Main Track, check Shift and Delay. Don't change them; just toggle the checkbox. Sometimes this forces Avidemux to recalculate the duration. Alternatively, use Audacity to trim/silence the audio to exactly match the video length (down to the millisecond).