[FFmpeg-user] Multiple parts of a video
Cecil at decebal.nl
Sun May 29 18:22:45 EEST 2022
Paul B Mahol <onemda at gmail.com> writes:
> On Sun, May 29, 2022 at 12:27 PM Cecil Westerhof <Cecil at decebal.nl> wrote:
> Paul B Mahol <onemda at gmail.com> writes:
> > On Sat, May 28, 2022 at 9:46 PM Cecil Westerhof via ffmpeg-user <ffmpeg-user at ffmpeg.org> wrote:
> > Paul B Mahol <onemda at gmail.com> writes:
> > > On Sat, May 28, 2022 at 4:28 PM Cecil Westerhof via ffmpeg-user <ffmpeg-user at ffmpeg.org> wrote:
> > >
> > > When I just want to have a certain part of a video, I can do something
> > > like:
> > > ffmpeg -y -i input.MTS \
> > > -ss 00:08 \
> > > -to 00:17 \
> > > -acodec copy \
> > > -vcodec libx264 \
> > > -preset veryfast \
> > > output.mp4
> > >
> > > But what if I want several parts of a video in my video?
> > > Do I need to cut the different parts out of the video and concatenate
> > > them, or is it possible to do it with one command?
> > >
> > > Using concat filter.
> > That is exactly what I already know: cutting the different parts.
> > Probably one command for each part and then concatenate them.
> > So n + 1 commands.
> > My question was: can it be done with one command?
> > This IS ONE command with concat FILTER.
> I am going to ignore you. You do not read my question and when I say
> that your reply does not answer my question you double down to 'prove'
> you are right.
> Before I CAN USE concat I have the create the n cuts I need to put
> into the concat.
> And that can be used already, just specify -ss for all inputs you gonna use.
> So you create cuts with ffmpeg all into single commad. Note that -c:a(v) copy does not work precisely with most of lossy
> So best and precise cut can be done inside all of libavfilter, by
> using (a)trim filters.
It seems I completely misunderstood you. My excuses about that.
> I'm really sorry if you gonna ignore my constructive help.
I eat my words.
> If you want to still use -c copy with lossy codecs, than you have
> opened a can of worms.
Should not do that.
Senior Software Engineer
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