[FFmpeg-user] Copying sections of an mp4 by time stamp
sundquistjames at gmail.com
Thu Aug 27 16:42:00 EEST 2020
Thank you Jim and Toni,
This is awesome. Thank you both for the fantastic links. Really helpful.
Excited to wrap my head around this.
On Thu, Aug 27, 2020 at 2:22 AM Toni Cambronero García <tocamgar at gmail.com>
> This link will explain to you all the secrets of coping sections of videos:
> Gracias por su atención.
> [image: foto+carn%C3%A9+copy.png]
> Antonio Cambronero García
> 46470 Catarroja (Valencia)
> ✉ tocamgar at gmail.com
> *☎** 696 01 41 41*
> El jue., 27 ago. 2020 a las 6:53, Jim DeLaHunt (<list+ffmpeg-user at jdlh.com
> > On 2020-08-26 19:50, James Sundquist wrote:
> > > I'm looking to copy sections of example.mp4
> > >
> > > Ideally this would be by time stamp. Perhaps the time stamps are noted
> > in
> > > a text file.
> > >
> > > Example as minutes:second
> > > 0:20 - 0:40 as a an mp4 with title "Exercise 1"
> > > 0:40 - 0:59 as an mp4 with title "Exercise 2"
> > > 0:20 - 0:59 as an mp4 with title "Primary Exercises"
> > >
> > Hello, James. Fortunately, this is pretty easy to do. Have you read the
> > FFmpeg documentation yet?
> > Look up the main command line options `-ss` and `-to` . If your input
> > file is `example.mp4`, then the commands will be like:
> > ffmpeg -i example.mp4 -ss 0:20 -to 0:40 exercise_1.mp4
> > ffmpeg -i example.mp4 -ss 0:40 -to 0:59 exercise_2.mp4
> > ffmpeg -i example.mp4 -ss 0:20 -to 0:59 primary_exercises.mp4
> > Note that `-i example.mp4` says that `example.mp4` is the input video.
> > The extension `.mp4` tells FFmpeg that the file is MP4 format. `-ss
> > 0:20` means, "discard the input video until 0 minutes, 20 seconds in,
> > then start copying to the output video from there. `-to 0:40` means stop
> > copying to the output video when the input video is 0 minutes, 40
> > seconds in. There is documentation on this time duration syntax.
> > I do not know of a convenient way to do all these cuts in one invocation
> > of FFmpeg. There may be a way I don't know about. When I had to solve a
> > similar problem, I invoked FFmpeg once for each cut. I suggest you use
> > a spreadsheet to generate this command invocation from your list of
> > start time durations, end time durations, and output file names. Then
> > paste the command invocations from the spreadsheet into the command
> > line. The command line will run them one after the other.
> > When you say "time stamps", I assume you mean the elapsed time from the
> > start of the input video to your desired moment in the video. The
> > documentation calls them "time durations", and means something else by
> > "time stamps".
> >  http://ffmpeg.org/documentation.html
> >  http://ffmpeg.org/ffmpeg-all.html#Main-options
> >  http://ffmpeg.org/ffmpeg-utils.html#time-duration-syntax
> > Does this work for you?
> > —Jim DeLaHunt, software engineer, Vancouver, Canada
> > _______________________________________________
> > ffmpeg-user mailing list
> > ffmpeg-user at ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-user
> > To unsubscribe, visit link above, or email
> > ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
More information about the ffmpeg-user