8/6/2023 0 Comments Split mp4 ffmpegx![]() ![]() By adding -segment_time_delta 2, you can make ffmpeg seek 2 seconds before each timestamp for a keyframe instead. %d at the end of the file name is an incremental number that starts at 0.īy default ffmpeg will seek to the next keyframe after the timestamps. ffmpeg -i invid.mp4 -threads 3 -vcodec copy -f segment -segmenttime 10:00 camouth26402d. segment_list_type tells ffmpeg to use a format usable with ffmpeg concat TO recreate the file again, type cat partfile a-c > file.mp4 Notice that i have typed a-c in the bracket, because the split created 3 files. segment_list is the name of the file to output the list of parts to. split -b 4M file.mp4 partfile This will split the files into chunks of 4 megabytes. set start position (in seconds) to cut the part from source video -t. segment_times is a list of comma separated timestamps. ffmpegHow to split video into multiple parts -i in.mp4. This is what worked : ffmpeg -i INPUT.mp4 -c copy -map 0 -f segment -segment_times SS.mmmmmm,SS,MM:SS,HH:MM:SS.mmmmmm -segment_list segments.list -segment_list_type ffconcat OUTPUT_FILE_NAME%d.mp4 The resulting parts and/or the concatenated video resulting from those parts always had issues. Using Concat Protocol and transcoding to MPEG-TS Using ffprobe to find all frames and selecting frame timestamps so that the boundaries of each part would be Using ffprobe to find keyframes and selecting frame timestamps so that the boundaries of each part would be Using -ss, either before -i with -copyts or after The split functionality in ffmpegX is quite straightforward, but it seems to work for avi files but not mp4. How to split an mp4 video along keyframes with ffmpeg without reencoding, so that the resulting pieces will be perfectly playable on their own and that reconcatenating them will result in a flawless video. The Audio is not important to me and should not be in the output. However, it has to cut on the nearest keyframes so accuracy is not guaranteed. This example will use stream copy mode, so re-encoding will be avoided. ![]() Because I looked far and wide for an answer to this, even going as far as posting on the ffmpeg mailing list and couldn't find something that worked. 1 Using the recent ffmpeg I am trying to split an arbitrary video to 10 equal parts of 1 seconds every given interval. Use the segment muxer: ffmpeg -i /Desktop/in.mp4 -c copy -map 0 -f segment -segmenttime 15 -resettimestamps 1 -segmentformatoptions movflags+faststart out03d.mp4.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |