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If your drive is the bottleneck, this will make things worse. If you want to proceed:
You’re already using ffmpeg to get the sequence of frames, correct? You can add the -ss
and -t
flags to give a start time and a duration. Generate a list of offsets by dividing the length of video by the number of processes you want, and feed them through gnu parallel to your ffmpeg command.
A law describes what happens, a theory explains why. The law of gravity says that if you drop an item, it will fall to the ground. The theory of relativity explains that the “fall” occurs due to the curvature of space time.