[Mplayer-cvslog] CVS: main/libvo vo_dxr3.c,1.83,1.84
Michael Niedermayer
michaelni at gmx.at
Wed Apr 10 18:24:53 CEST 2002
Hi
On Wednesday 10 April 2002 18:23, Arpi wrote:
> Hi,
>
> > (Michael, perhaps you could explain to me why avc_ctx->quality = 1
> > produces
>
> as dct coeffs with qscale=1 are out or allowed mpeg1 range and thus they
> will be clipped, producing _very_ bad quality images.
i think there are a few other problems with quality=1 too
>
> we should workaroundthis. librte had a trick, it checked coeffs range
> _before_ quantization, and if all values were small, it used qscale=1,
> otherwise qscale=2. so it got better quality using a bit more cpu.
agree, but dont expect this anytime soon
[...]
Michael
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