[FFmpeg-devel] [PATCH 1/1] segafilm: fetch duration from the container

[Gyan Doshi]

On 4/20/2018 9:22 PM, James Almer wrote:
> 
> Wouldn't this hint that the file in question is broken?

I don't follow. If the inversion was a mistake, then frames currently 
not marked by demuxer are in fact keyframes and a stream decoded from 
that frame onwards should show correct output. I see precisely the 
opposite. Output generated by streamcopying from currently marked KF 
decode correctly and those generated by streamcopying from currently 
marked non-KF decode incorrectly*.

This should rule out errors in the muxer as well.

* ffmpeg -i logo-capcom.cpk -ss 5.4 -c copy -copyinkf -an copy-test.cpk 
&& ffplay copy-test.cpk


It's very much possible I'm missing something but I don't see what.

Regards,
Gyan