Re: [FFmpeg-user] splitting and concatenating file results in a different file

2019-11-05 Thread Carl Eugen Hoyos
Am Do., 31. Okt. 2019 um 19:15 Uhr schrieb Jon Beyer : > ffmpeg -i concat.mp4 video2/frames_%05d.jpg > > ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers Unrelated: Please understand that only current FFmpeg git head is supported here and that there is absolutely no release

Re: [FFmpeg-user] splitting and concatenating file results in a different file

2019-10-31 Thread Jon Beyer
A bit more information on this issue, after created the concatenated file with the following commands [1] and [2], pasted at bottom, if I print pkt_pts_time via ffprobe with commands [3] and [4], I see that the timestamp of frame 302 is what is throwing things off when I compare the two list of

Re: [FFmpeg-user] splitting and concatenating file results in a different file

2019-10-31 Thread Jon Beyer
Thanks Carl, here is the full output from each of those commands. Nothing unusual that I can see. I have truncated the diff output, because the output is superfluous after those three frames are inserted after chunk_000.mp4. I'll point out that the second-to-last line of the concat filter

Re: [FFmpeg-user] splitting and concatenating file results in a different file

2019-10-31 Thread Jon Beyer
Let me correct me previous statement slightly. It would appear that there aren't three frames inserted at the beginning of chunk_001.mp4 in concat.mp4. There is one frame inserted there, that causes an off-by-one error, and then I would imagine that the second and third superfluous frames are

Re: [FFmpeg-user] splitting and concatenating file results in a different file

2019-10-31 Thread Carl Eugen Hoyos
> Am 31.10.2019 um 14:55 schrieb Jon Beyer : > > I'm trying to understand the basics of splitting a file on I frames and > then concatenating the smaller files back together. The fundamentals are that ffmpeg is a transcoding application, not a file archiver. Your command lines should provide