[MPlayer-users] mpeg4 encoding result bitrate

[Mark Williams (MWP)]

> MWM>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> MWM>Hi all,
> MWM>
> MWM>Ive just compiled/installed 1.00b3.
> MWM>Through a bit of googling and searching of this mailing list im using:
> MWM>
> MWM>-lavcopts
> MWM>vcodec=mpeg4:vbitrate=$BITRATE:vhq:trell:mbd=2:vmax_b_frames=1:v4mv:vb_strategy=0:vlelim=0:vcelim=7:cmp=2:subcmp=2:precmp=2:predia=1:dia=1:vme=4:vpass=1
> MWM>
> MWM>Using this though, mencoder seems to be ignoring the bitrate im
> MWM>specifying.
> MWM>For example, i specified 700kbit, and mencoder produced an avi
> MWM>avging ~1600kbits/sec (2pass).
> MWM>
> MWM>What am i doing wrong?
> 
> Well, firstly you should remove vhq option - you are using newer "mbd=2"
> instead. Second, using vb_strategy=0 and vme=4 is useless, this is
> default. Also I'm not sure that you are improving quality by specifying
> predia & dia options, you should check it.

Ok, thanks.
Looks like ill need to do some testing myself.

> After those changes (also without them) the above string works for me,
> but I'm using mplayer 1.0pre4 & cvs libavcodec. Are you sure you are
> actually encoding video, you need to use "-ovc lavc" instead of "-ovc
> copy"? Btw, in future always report complete command line.

Where is 1.0pre4 avaliable from?
And also, is therea page somewhere giving the details to get the cvs libavcodec?

Thanks.