On Wed, 26 Aug 2020 20:03:57 -0700 Samuel Sieb <samuel(a)sieb.net> wrote:
On 8/26/20 7:43 PM, Ranjan Maitra wrote:
> I am writing to ask if there is a way to remove a small portion of a mp4 file.
Basically, the file is my lecture (has both audio and video
> recorded using simplescreenrecorder) and I want to remove a portion of the mp4 (from
the 14:30 to the 15:50 time-points) of an mp4. The mp4
> itself is currently 17:50 minutes long.
> Is there a way to do this, using a command line tool (preferred) or something else?
I like command line tools because they are faster.
"ffmpeg" is the typical tool for things like that. Check the docs for
how to select segments of the video.
Thanks, this is what I was able to do, thanks to SO:
ffmpeg -i ch3-2.mp4 -ss 00:00:00 -t 00:14:30 -acodec copy -vcodec copy test1.mp4
ffmpeg -i ch3-2.mp4 -ss 00:15:50 -t 00:17:50 -acodec copy -vcodec copy test2.mp4
then created a file: input.txt with the two lines:
ffmpeg -f concat -i input.txt -map 0 -c copy output.mp4
Seems to work locally. I have submitted it to Canvas (our LMS) who will now convert and
release the video (or garbled rubbish if not).