[MPlayer-dev-eng] [PATCH] autoq support for control()

[Michael Niedermayer]

Hi

On Sunday 10 February 2002 20:01, Juan J. Sierralta P. wrote:
[...]
> > i could try to implement the aan dct (=ffmpeg c dct) in mmx ... but its
> > less accurate than the current one
>
> 	Nopes..... AAN is much inaccurate for me :)
really? i know its less accurate, but i didt know its that bad
btw there was a permutation bug in the c dct, perhaps that was why it looked 
bad, should be fixed though
imho if u can see a difference between the c & mmx dct than there is a bug 
somewhere

> 	I haven`t look it but maybe a SSE DCT could help.
hmm, i doubt it

[...]
> > > 	You don`t sound much conviced. Take a look at the lots of (if .. else)
> > > on mpegvideo.c
> >
> > imho these if/else per block/macroblock do slow things down, i know that
> > from the postprocessing code each if() had a 0.2% speed effect iirc
>
> 	Yes. But since we use the same core for every coder we don't have much
> choice. Maybe some of them could be avoided.
> 	BTW I'm starting to hack a new bit rate control if you could test
> libavcodec to see if I ain't broke anything, it seems not but I'm
> commiting often to avoid getting behind like with the RTP callbacks.
ill tell u if i notice anything strange, but i only use the decoder part 
normally so i wont notice any encoder bugs ...

Michael