Re: [gentoo-user] tweaking mencoder

[Iain Buchanan <iaindb@netspace.net.au>]

On Mon, 2006-08-28 at 22:09 +0930, Iain Buchanan wrote:
> On Fri, 2006-08-11 at 08:21 +0100, Uwe Thiem wrote:
> > On 10 August 2006 23:06, Iain Buchanan wrote:
> > > Hi all,
> > >
> > > I'm trying out mencoder to try a few different codecs and formats for 1.
> > > dvd authoring and 2. just compressing to keep on my HD.
> > 
> > For DVDs, try this:
> > 
> > mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd \
> > -vf scale=720:576,harddup -srate 48000 -af lavcresample=48000 \
> > -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:\
> > vbitrate=5000:keyint=15:acodec=ac3:abitrate=192:aspect=4/3 \
> > -ofps 25 -o outfile.mpeg infile
> 
> wow! I just got around to trying that a couple of days ago and it
> produces great output: fast, small file size, and no noticeable
> difference in quality between the mpeg and the original dv! (I watched
> many different clips many times over to make sure!  on TV and on my LCD)

Hmm, on closer inspection, I _do_ notice the output is slightly lower
quality.  (Don't know why I didn't see it before...)  Is there any way I
can tweak the quality? Can I change vbitrate, or is 5000 a dvd standard?

thanks heaps!
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

We were so poor we couldn't afford a watchdog.  If we heard a noise at night,
we'd bark ourselves.
		-- Crazy Jimmy

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