[MPlayer-dev-eng] [PATCH] Frame duration bug due to DEMUXER_TYPE_GIF

Jan Kritzner kritzner at i4.informatik.rwth-aachen.de
Wed Mar 26 17:34:03 CET 2003


Am Mittwoch, 26. März 2003 16:32 schrieb Alex Beregszaszi:
> Hi,
>
> Fixed your first issue (a bit differently, so please test it (CVS:main)
> ;)
> About the second one: I doesn't seems right to me, wait for other
> replies.

Thx,

regarding the 2nd issue, just to clarify:

I've made some experiments with reducing the rate of videos to different 
values (30->15,10) and wanted to compare the effect on the PSNR. To compare 
the streams I wanted to increase the rate to 30 frames again. Results were 
awful, because the videos slightly got out of sync. When recoding from 15->30 
fps I expect getting each frame duplicated, and not getting each frame 1-3 
times.

However, it's a paradigm shift from "insert a picture, if it completely fits" 
to "minimize the error of the presentation time".
Maybe it even makes sense for the drop algorithm, but before changing anything 
somebody should have a problem with the implementation. ;)

Jan



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