[MPlayer-users] Two-passes encoding - What happens exactly?

[Alain Barthélemy]

Le lundi 31 mai 2004, 16:11:22 ou environ The Wanderer <inverseparadox at comcast.net> a écrit:
> Alain Barthélemy wrote:
> 
> >
> >Let's have an example. I do a lot of encoding of TV signal. TV signal
> >is never of optimum quality of course. Here is my instruction line:
> >
> >mencoder -tv driver=v4l:width=640:height=480:amode=0 -ovc lavc 
> >-lavcopts vcodec=mpeg4:vbitrate=1800:mbd=2:acodec=mp3:v4mv -oac 
> >mp3lame -lameopts cbr:br=96:mode=3 -vf crop=620:460,pp=tn/lb,scale 
> >-zoom -xy 640 -sws 1 tv:// -o movie.avi -endpos <sec>
> >
> >I am not original. I just try what I read on the list.
> 
> Any particular reason you don't use -oac lavc -lavcopts
> acodec=mp3:abitrate=96:... ? Do you just really need mono sound?
> 
> -- 
>       The Wanderer

What does abitrate=96 do here? If I read the manpage, I see: 

abitrate = <value>
    Audio bitrate in kBit (default 224)

What does it do with mono/stereo sound and there is always a default value (224).

Why 224 as default? Why not 128 as default?

-- 
Alain Barthélemy
cassandre at bartydeux.be
http://bartydeux.be
Linux User #315631