transcode-users
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Original]

Re: [transcode-users] rc buffer underflow with ffmpeg


To: transcode Users Mailing List <transcode-users@xxxxxxxxx>
Subject: Re: [transcode-users] rc buffer underflow with ffmpeg
From: Phil Ehrens <phil@xxxxxxxx>
Date: Wed, 2 Mar 2005 08:02:23 -0800
Delivered-to: itdp@localhost
In-reply-to: <20050302150159.GB6334@t22>
References: <1109761276.4460.63.camel@localhost.localdomain><4225cc86.50005@msgid.achurch.org> <20050302150159.GB6334@t22>
User-agent: Mutt/1.4.1i

Phil Ehrens wrote:
> Andrew Church wrote:
> > >Another simple solution is not to use 2-pass encoding. If you're not
> > >trying to save every single bit, just use 1-pass encoding with a 
> > >slightly higher bitrate or lower "q" setting.
> > 
> >      Actually, 2-pass encoding does give significantly better results, as
> > documented on the wiki.  (Not really relevant if you have bits to spare,
> > I'll grant, but at least some of us don't want to use up one DVD per anime
> > episode. ;) )

Using ffmpeg in two-pass mode with mencoder for ripping
dvd's produces absolutely brilliant results. How is it
that the rate control is not broken when using ffmpeg
via mencoder? Or is it spcifically mpeg2 rate control that
is borken?

I have to say, among the many things I have used a computer
to do, video encoding is the one thing that never seems to
lose it's mystery. Writing a digital control feedback circuit
for simulating aircraft vibration modes with multi-axis
hydraulic actuators was trivial compared to this.

-- 
Phil Ehrens <phil@xxxxxxxx>      | Fun stuff:
The SilverLake Linux Users Group | http://www.ralphmag.org
3428 Winslow Drive               | http://www.yellow5.com
Silverlake, CA 90026             | http://www.slug.org


[Prev in Thread] Current Thread [Next in Thread]