Use ffmpeg How to remove an audio track from an mp4 video file? - Unix & Linux Stack Exchange[^]

Use ffmpeg. I keep trying to include the commands but codeproject says the message is flagged as spam, but you can easily find them.

Use ffmpeg First run ffmpeg -i file.mp4 to see which streams exists in your file. You should see something like this: Stream #0.0: Video: mpeg4, yuv420p, 720x304 [PAR 1:1 DAR 45:19], 23.98 tbr, 23.98 tbn, 23.98 tbc Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Stream #0.2: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Then run ffmpeg -i file.mp4 -map 0:0 -map 0:2 -acodec copy -vcodec copy new_file.mp4 to copy video stream and 2nd audio stream to new_file.mp4.