![]() ![]() ![]() Create a file called concat.txt and add the following entries (corresponding to the video clips created above): file 'part1.mp4' You can in principle also try to concatenate the bitstreams without re-encoding them, using the concat demuxer. It’s a little more straightforward but otherwise should be equivalent to the above method. This will again re-encode the video stream. If the files have audio, use the same approach as above: ffmpeg -i part1.mp4 -i short-video.mp4 -i part3.mp4 -filter_complex \ If you want to split the clips and later reassemble them:įfmpeg -i edv_g24.mp4 -ss 0 -to 10 -c copy part1.mp4įfmpeg -i edv_g24.mp4 -ss 10 -to 15 -c copy part2.mp4įfmpeg -i edv_g24.mp4 -ss 15 -c copy part3.mp4įfmpeg -i part1.mp4 -i short-video.mp4 -i part3.mp4 -filter_complex \ You can read more about this on the FFmpeg Wiki, e.g. Note that video and audio will be re-encoded in this case – make sure to specify appropriate output quality targets (e.g. If your files have audio, you have to trim those streams separately: ffmpeg -i edv_g24_2.mp4 -i short-video.mp4 -filter_complex "\Ītrim=0:10,asetpts=PTS-STARTPTS \Ītrim=0:5,asetpts=PTS-STARTPTS \Ītrim=15:30,asetpts=PTS-STARTPTS \Ĭoncat=n=3:v=1:a=1" \ If you want to trim from a certain timestamp to the end, use trim=start=15 instead of specifying the range. ![]() (The setpts filter resets the timestamps of these individual parts to 0, which is required for concatenation). Here, trim is used to specify the individual portions of the input video streams ( 0:v, 1:v) that you later want to concatenate. Is there any ways to force the header size also (aside from codecs) be the same?įfmpeg -i edv_g24.mp4 -i short-video.mp4 -filter_complex "\ I noticed the HEADER SIZE is different which is apparently causing the problem. I used mediainfo tool to compare the two files and noticed differences in the header sizes while all video codec related stuff was the same. Second question: Assuming FFmpeg is the viable solution, when I simply use the command ffmpeg -I -ss 10 -t 5 -c copy output.mp4, my video processing code can not read and process the file. First split the video (in this case, 0-10, 10-15, and 15-end)įirst question: Is this the best and fastest solution? Do we have an easier command or other tools to replace a specific period of time in video with another video?.For instance, for input 10 15 I will need to replace EXACT seconds 10 to 15 with another video. I’m trying to use FFmpeg to split video based on some start_time and end_time inputs, and replace those with other video files. ![]()
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