How Can FFmpeg Trim Video in Original Quality:

Command: ffmpeg -i input.mkv -ss 00:00:00 -to 00:01:30 -c copy output.mkv

-SS: where to start video (in hour:min:second), optional if you are starting from the beginning of the video.
-to where to end video (in hour:min:second), optional if you are leaving the rest of the video (to the end) in.
-i Input file name
-c copy: output in exact quality.
output.mkv, name of the file you want the new version of the video to be.

Source | Date (original): May 19th, 2021 | Update for optional flags on -ss / -to: Jan 30th 2026