[Mplayer-users] new ffmpeg decoder

[Arpi]

Hi,

> >
> >mplayer 2001-07-16 11:27 works fine :)
> >
> >imho this is smth in last optimized:
> >dsputil.c or/and dsputil_mmx.c 
> >
> Try latest CVS - I forgot to add EMMS at end of some function - maybe it help you
not fixed. i also have this problem with most of my files.

btw i think it's a bad idea calling emms after each macroblock MC.
(AFAIK emms is very slow think, 56 clocks or so on celeron)
if ffmpeg doesn't uses float for divx decoding, then it's enough to
call once after the whole frame is finished.

it is a rounding problem at motion compensation. you should review
roundings, compared mmx and c versions.
it does matter a lot for divx, because the very long GOP times (500 P frames
between I keyframes - a single bit error is enough if you see it 500 times
iterating)


A'rpi / Astral & ESP-team

--
mailto:arpi at thot.banki.hu
http://esp-team.scene.hu

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