Re: FFmpeg Xvid CBR or VBR with maxrate ? how ?

Re,

>>I'm trying since this week to make a mp4 video with ffmpeg and the xvid
>>codec. It works well _BUT_ I'd like to limit the maximum bitrate because
>>it's for streaming purpose. The bitrate must not exceed the allowed
>>bandwidth (i.e: 80kb/s). So how to do CBR or VBR with a limited maximum
>>bitrate ?
> There is no "maximal" bitrate setting for XviD, because as CBR this isn't
> a well defined term. What you should use is the VBV-settings which do  
> what you really want: Setting a maximal number of bytes which have to be 
> transfered within a certain time with a certain sized buffer. 

Ok, well, and how can we do that with ffmpeg or mencoder ?
It seems that it's -bufsize (and -maxrate) with ffmpeg and rc_buffer 
(and rc_averaging_period) with mencoder.
But both don't achieve a CBR file or a VBR file with a maxrate. It's 
very annoying.

A+
Tom