Hi Carl,
On 07/02/2024 13.56, Carl Zwanzig wrote:
On 2/7/2024 10:34 AM, Mark Filipak wrote:
Okay. Why are they different?
Because the containers are different? An mp4 container is not the same as an mkv (or avi or mpeg),
they must have different demuxers.
They are the same source, same container. The only difference is command.
ffmpeg -ss 20.061708333 -copyts -i %SOURCE% -map 0 -c copy -sn -dn -muxdelay 0
%TARGET%
ffmpeg -copyts -i %SOURCE% -map 0 -ss 20.061708333 -c copy -sn -dn -muxdelay 0
%TARGET%
Why do the results differ? They're not a little different. They're very different. The DTSs differ.
The PTSs differ. The cutting points differ by a couple hundred frames. Even some of the packet
lengths differ! This is serious.
I can't tell if the GOPs differ -- DTS-sorted v PTS-sorted -- because it's impossible to correlate
'framecrc' results and 'showinfo' results.
--Mark.
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