Immediately after switching the page, it will work with CSR.
Please reload your browser to see how it works.
ffmpeg -i input.mp4 -ss 00:00:00 -to 0:30:00 -c:v copy -c:a copy chapter1.mkv
u can just copy paste it 10 times in your text editor, than adjust ss, to times using any video player that can play vhs file.