I need a simple cli tool to rotate mp4 video.

[Jakub Lach]

Thanks, I'm was already playing with mencoder, but I had no luck with it; 
either I was destroying/misaligning audio track or loosing video quality.

(or encoding raw with 54x size increase).

I have more success with ffmpeg, e.g.

$ ffmpeg -i A.mp4  -vf "transpose=1" -r 30 -sameq -acodec copy B.mp4 

Is _almost_ ideal, apart from x1.5 increase in size... playing with fps does
not
change it too.



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