cut split video mp4 linux ffmpeg

With ffmpeg you can split file using the following command:
ffmpeg -vcodec copy -ss START -t LENGTH -i ORIGINALFILE.mp4 OUTFILE.mp4
where START is starting positing in seconds or in format hh:mm:ss LENGTH is the chunk length in seconds or in format hh:mm:ss
So you will need to run this command few times depending on how long your video. If let's say your video is 31 minutes long and you want so split into 15 min chunks here is how you run it:
ffmpeg -vcodec copy -ss 0 -t 00:15:00 -i ORIGINALFILE.mp4 OUTFILE-1.mp4
ffmpeg -vcodec copy -ss 00:15:00 -t 00:15:00 -i ORIGINALFILE.mp4 OUTFILE-2.mp4
ffmpeg -vcodec copy -ss 00:30:00 -t 00:15:00 -i ORIGINALFILE.mp4 OUTFILE-3.mp4
There is a python script that you can use that does this automatically(i.e. takes video file, chunk size in seconds and generates individual playable video files):

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