[MPlayer-users] 2 pass divx encoding from .VOB/dvd - Targeted filesize (bitrate) ends up way way wrong

[D Richard Felker III]

On Tue, Aug 20, 2002 at 01:17:37AM +0200, Michael Niedermayer wrote:
> > Actually, I believe there *is* a bug in libavcodec where it won't
> > properly distribute bits on the second pass when the minimum qscale
> > (vqmin) is already reached on lots of frames, so quality still won't
> > be ideal, but it should be a lot better.
> hmm, one possible bug is with the fps, lavc ratecontrol calculates the bitrate 
> by counting the encoded frames & using the framerate but if this isnt 
> constant or something then the bitrate could be wrong
> 
> btw, its much easyer to fix bugs which i can reproduce, sadly i cant, and 
> noone sended me a video which triggers it :( (yes i know that most of these 
> videos are too huge to upload)

I thought I uploaded a relevant sample from Ghost in the Shell, but
maybe not. Let me know if you'd like me to try to reproduce it and
I'll see what I can do.

Rich