====== ffmpeg ======
===== multiple crop =====
[[http://stackoverflow.com/questions/33804431/multiple-crop-operations-on-input-video-using-ffmpeg|Source 1]]

[[http://video.stackexchange.com/questions/4563/how-can-i-crop-a-video-with-ffmpeg|Source 2]]

<sxh bash>
ffmpeg -i big_buck_bunny_720_stereo.mp4 -filter_complex "[0:v]crop=320:360:0:0[out1];[0:v]crop=320:360:320:0[out2]" -map [out1] -map 0:a out1.mp4 -map [out2] -map 0:a out2.mp4
</sxh>