[MPlayer-users] libavcodec vbitrate problem

Arpi arpi at thot.banki.hu
Thu May 9 21:19:02 CEST 2002


Hi,

> > -lavcopts vqmin=2
> > should allow higher bitrates & looks better (isnt the default cuz it cause
> s 
> > clipping in the quantizer for h263 but is ok for mpeg4)
> 
> Ok. I tried and it helped. Thanks.
> Now I get (first two chapters):
> 
> vbitrate|actual bitrate|filesize
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 800     |796.2         |24549218
> 1600    |1500.8        |51020492
> 2000    |1706.0        |57971188
> 
> This is much closer bitrate.
> Although, quality was very good even at 800Kbps.
> libavcodec gives suprisingly good first pass.
> 
> Are there any more tips like that for libavcodec ? I have read the man page

increase resolution of source material - 1800 for such small resolution is
nonsense, there is no such big amount of data to encode...

1800 is usually used for full dvd size...


A'rpi / Astral & ESP-team

--
Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu




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