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by foi 3057 days ago
How cut video and save it's fragment without full rencoding?
2 comments

You can use ffmpeg for this, using "copy" for audio and video, but setting "-ss <hh:mm:ss.0>" for the start time and "-t <seconds>" for the length of your cut beginning from the start timestamp given with -ss.
avidemux can do this as I recall. It can also re-encode video if you decide you need that.