Cut with start position and duration

$ ffmpeg -i input.mp4 -ss 00:03:17 -t 00:10:11 -c:v copy -c:a copy output.mp4

-t specifies the duration from the start position

Cut with start position and end position

$ ffmpeg -i input.mp4 -ss 00:15:23 -to 00:17:32 -c:v copy -c:a copy output.mp4

-to to specify an exact time to cut to from the starting position.

Trim duration from end of video

ffmpeg -sseof -00:12:00 -i input.mp4 -c copy output.mp4