On Sun, 29 May 2022 13:17:55 +0200, Michael Koch <astroelectro...@t-online.de> wrote: >>> 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? >> > >Please have a look at >https://trac.ffmpeg.org/wiki/Concatenate > >"Concat demuxer", "Concat protocol" and "Concat filter" are three >different things. >You did use the concat demuxer. Now if you want to do all in one line, >you must use the concat filter. > >Michael
Stepping in here due to the interesting topic: I am daily using a tool I created myself to use ffmpeg to remove ads from recorded mp4 TV news videos. What I do is the following: - I manually scan the video to find the start/end times of the ads (seconds) - From this list the tool creates the ffmpeg commands to extract the parts *between* the ads as separate numbered mp4 files - Then a list of these small files is written to a file $JOINFILE - This is then used in an ffmpeg call like this: ffmpeg -f concat -safe 0 -i $JOINFILE -c copy $TARGETFILE - When this is done the small files and $JOINFILE are deleted So reading this thread I get the feeling that there is a way to use the list of cut times in a *single ffmpeg command* to create the output mp4 file *without* creating the list file and essentially doing everything in this single ffmpeg command. > Paul B Mahol <one...@gmail.com> writes: > Using concat filter. And this is repeated several times.. But the exact way to do this complete extraction given the multiple time slots into a final single mp4 file using the concat filter is not described. Please note that I *do* use concat in my command and I still have to first separately cut out the parts to be concatenated... How can these two steps be merged into a single ffmpeg command is something I would also like to know. The current strategy I use (as shown above) is producing a final video that has some artifacts of the ads at the cut points and I hope that by doing it in a single operation these will not be present. -- Bo Berglund Developer in Sweden _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".