[XviD-devel] better rate control

[Dirk Knop]

Hi all,

Christoph Lampert wrote:

>3) Choice of quantizers in second pass of twopass (#1, better fit to
>targer filesize is really needed here) 
>  
>

Hm. In my tests, we hit the target filesize very closely:

Matrix, desired target size 599.000kb

Mpeg2dec.dll (original), external scaling: 599.012kb
Mpeg2dec.dll (with PP), ext. scaling: 599.024kb
Mpeg2dec.dll (with PP), internal scaling: 599.114kb

My conclusion is that redistributing the rounding error while 
downscaling the bitrate curve is giving us bigger deviation from the 
target filesize (the rounding error was 89kb when using my statsreader) 
- but:

I don't see where there is urge for "better fit to target filesize".....

Just my 2 € cents,

regards,
Koepi