Rotating a video by 90 degrees.

ffmpeg video

I needed to do some video processing, as the videos were rotated 90 degrees. Turns out this is not a problem for ffmpeg!

First, strip the sound,

ffmpeg -i betty.mp4 -vcodec copy -an betty-no-sound.mp4

Second, compress this huge file,

ffmpeg -i  betty-no-sound.mp4 -vcodec libx264 -crf 30 betty-compressed2.mp4

Rotate counter clockwise, reference on flags is here:

ffmpeg -i betty-compressed2.mp4 -vf "transpose=2" betty-rotated.mp4

Finally, cut out the relevant section,

ffmpeg -i betty-rotated.mp4 -ss 00:00:36 -to 00:02:25 betty-final.mp4

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