ffmpeg - Audio - Strip audio

ffmpeg -i input.mp4 -an output.mp4

NOTE: The -an flag strips audio.

Mute example

ffmpeg -i input.mp4 -c:v libx264 -qmin 0 -qmax 25 -crf 23 -b:v 1M -vf scale=1920:-2 -an -threads 0 output.mp4