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According to this answer, ffmpeg can be used. (Below is a simplified answer based on the one linked above.) To keep data after a start point (up to the end): ffmpeg -i INPUT -c copy -ss START_TIME -map 0 OUTPUT To keep data between two time points: ffmpeg -i INPUT -c copy -ss START_TIME -to END_TIME -map 0 OUTPUT To keep data of a certain duration after ...


Considering Youtube videos, extracting audio from video may not be necessary, as the audio tracks can be downloaded separately as such by using Firefox with the latest Flashgot addon or by using mps-youtube (it is a tool meant to play and download audio tracks from youtube: more here). Considering mp4 video files: As answered here, one can us a more ...


I believe you will have to cut separate chunks, then concatenate them. Don't use cat for that, as timecodes will be all over the place. If the video chunks are mp4, use mp4box (from the gpac package) for concatenation: mp4box -cat vid1.mp4 -cat vid2.mp4 ... -cat vidN.mp4 -new vid1-N.mp4

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