ffmpeg -i movie.mp4 -strict -2 -vf "transpose=X" out.mp4 where transpose=X can be 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip
ffmpeg -i movie.mp4 -strict -2 -vf "transpose=X" out.mp4 where transpose=X can be 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip