Trim a video using FFMPEG

Trim video with duration

ffmpeg -i input.mp4 -ss 00:00:30 -t 00:00:30 -c:v copy -c:a copy output.mp4

Trim video to a specific time

ffmpeg -i input.mp4 -ss 00:00:30 -to 00:01:00 -c:v copy -c:a copy output.mp4

Bonus: Good re-encoding settings

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