[MEncoder-users] Video VBR

[Julien Youx]

Guillaume POIRIER a écrit :
> On 6/15/06, Julien Youx <juju at nain-de-jardin.com> wrote:
>> Hi,
>>
>> I read the man page, but I can't see if it's possible to do 2 pass
>> encoding in video variable bitrate.
>>
> 
> yes. you don't see it because video encoding, almost by definition, is
> variable bitrate.

so with this :

# mencoder in.mpeg -o out.mpeg -of lavf -ovc lavc -lavcopts 
vcodec=mpeg4:vbitrate=64:vhq=4:keyint=60:vpass=1 -lavfopts format=m4v 
-vf scale=176:144 -ofps 6 -nosound

# mencoder in.mpeg -o out.mpeg -of lavf -ovc lavc -lavcopts 
vcodec=mpeg4:vbitrate=64:vhq=4:keyint=60:vpass=2 -lavfopts format=m4v 
-vf scale=176:144 -ofps 6 -nosound

it will be a mpeg4 video track in 64 kb/s VBR ?
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Julien YOUX (juju at nain-de-jardin.com