I'm trying to understand the basics of splitting a file on I frames and then concatenating the smaller files back together. I am using the commands below to split a basic .mp4 file with the "-f segment" option, and then I use "-f concat" to join them. I then extract all frames from the file as .jpg files and compare the results. The concatenated version has three extra frames that seem to appear at what would be the start of the second chunk. Any idea what is going on here, and how to correct it?
Thanks in advance! ffmpeg -i input.mp4 -map 0 -c copy -f segment -segment_time 10 chunk_%03d.mp4 ffmpeg -f concat -safe 0 -i mylist.txt -c copy concat.mp4 ffmpeg -i input.mp4 video1/frames_%05d.jpg ffmpeg -i concat.mp4 video2/frames_%05d.jpg diff -r video1/ video2/ _______________________________________________ ffmpeg-user mailing list firstname.lastname@example.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".