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FFMpeg stitch videos together

To concatenate videos without re-encoding:

/Applications/ffmpeg -f concat -safe 0 -i ./all.txt -c copy entire.mp4

Contents of all.txt:

file './C0043.MP4'
file './C0044.MP4'

Command to create compressed MP4:

ffmpeg -i entire.mp4 -vcodec libx265 -crf 28 output.mp4