Displaying 2 results from an estimated 2 matches for "ratecontrol".
2003 Mar 25
4
Fixed Quantizer - Fixed Quality
Here's the problem:
> 2) Encoding with rate control as in single pass "Bitrate
> control" will not
> lead to better quality than fixed quant (with the right value
> of the fixed
> quant). Ratecontrol doens't know anything about "quality". It
> will try to
> reach more-or-less CBR.
>
> But somehow this is not a fair comparison, because how do you
> determine
> the right quantizer value? You have to look at the material,
> so you have
> extra informat...
2003 Mar 23
6
A comparison of VP3, and two MPEG-4 variants
a couple points before I look at this too hard:
"For VP3, since you can't do a constant quality encode"
what? that should not be the case. Could be a QT-specific bug. Theora at any rate is certainly capable of doing constant-quality encode. This probably explains your standard deviation complaint -- VP3 is running a rate control alg, where the other codecs are just shooting for