[MPlayer-users] [BUG] mencoder cannot encode to the required bitrate

Holger Reinmann H.Reinmann at gmx.net
Sat Sep 2 11:11:12 CEST 2006


Hi,

On Sat, 2 Sep 2006 16:03:24 +0800
陆然 <hephooey at gmail.com> wrote:

> Hi,
> 
> Here I found a file that cannot be encoded to the specified bitrate
> with lavc, I have tried the following command lines:
> 
> mencoder -v -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=300
> -o test.avi rate_control.avi
> 
> gives me a test.avi with ~250 kbit/s
> 

[...]

Thats not a BUG!!! 

Please have a look at the DOCS and the manpage how lavc works.
In the the last section of DOCS/tech/encoding-tips.txt you find useful
information about constant bitrate encoding with lavc.

holger

BTW: Search the mplayer-users and mencoder-users archive about constant
bitrate settings in lavc. 



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