download ffmpeg file from https://www.gyan.dev/ffmpeg/builds/ >> around 56m bytes
unzip it
converter video type from mkv to mp4
程式碼:
ffmpeg-2025-07-01-git-11d1b71c31-full_build\bin\ffmpeg.exe -i file1.mkv file2.mp4
split video by size??
split video by time
程式碼:
ffmpeg -i input.mp4 -ss 00:00:00 -to 00:10:00 -c copy output1.mp4
ffmpeg -i input.mp4 -ss 00:10:00 -to 00:20:00 -c copy output2.mp4
if you don't use -c copy , it will re-encode
This is an option to trim via stream copy. (NB: Very fast)
程式碼:
$ ffmpeg -i source.mp4 -ss 0 -t 600 first-10-min.mp4
$ ffmpeg -i source.mp4 -ss 600 -t 600 second-10-min.mp4
$ ffmpeg -i source.mp4 -ss 1200 -t 600 third-10-min.mp4