ffmpeg -hide_banner -noaccurate_seek -ss 00:00.5 -i nl.mp4 -t 0.5 -c copy -avoid_negative_ts make_zero -y avoidnoac.mp4
ffmpeg -hide_banner -ss 00:00.5 -i nl.mp4 -t 0.5 -c copy -avoid_negative_ts make_zero -y avoid.mp4
ffmpeg -hide_banner -noaccurate_seek -ss 00:00.5 -i nl.mp4 -t 0.5 -c copy -y noac.mp4
ffmpeg -hide_banner -ss 00:00.5 -i nl.mp4 -t 0.5 -c copy -y t.mp4
md5sum *.mp4
a576ec95b93a6b29c63ca0debe8848a6 avoid.mp4
a576ec95b93a6b29c63ca0debe8848a6 avoidnoac.mp4
a78a6e5a3df88ca19339383aa5aa3367 nl.mp4
54b75ca7f90d62652b00b096d9484c0b noac.mp4
54b75ca7f90d62652b00b096d9484c0b t.mp4
what are the right arguments for losslessly cutting out parts of videos?