Use FFMPEG To Rotate And Mute Audio
Lots of times I take videos to make how to's with but in the end I need to mute and rotate the video. I do this quickly and easily with FFMPEG
In this example I take example-origional.mp4 and rotate it 90 degrees and I remove the audio track.
The option transpose=1 rotates the video, replace 1 with 2 or 3 to rotate the video 90, 180 and 270 respectively.
The option -an is what you use to remove the audio track