[MPlayer-users] lavc-Options for *BEST* quality?

[Meino Christian Cramer]

From: Colin Leroy <colin at colino.net>
Subject: Re: [MPlayer-users] lavc-Options for *BEST* quality?
Date: Sun, 2 Feb 2003 22:37:12 +0100
Message-ID: <20030202223712.517fb495.colin at colino.net>

Hi!

In this context I want to repeat a mail I sent some days ago and get
no answers so far::

----------

Hi all ! 

 This is my first mail to this list. 

 I am using mencoder in conjunction with libavcodec/ffmpeg on a 
 linux box (2.4.20)

 And I have a more "academical problem".... ;O)
 
 In ./DOCS/tech/encoding-tips.txt there are two general rules
 given (I exegrate a little to make it more clear):

 1.) Dont encode with more then 0.25 bpp.
 2.) Dont use greater quantizer as 2-3 (2.5).

 A specific DVD of my own "has a problem" (or better: _I_ dont 
 understand a certain aspect of all this...):

 _EITHER_ I scale up the frame to get lower bpp values around 0.25
 _OR_ I scale down the frame to get smaller values for the quantizer.

 But regardless what I do, I hurt the one or the other rule.

 I have not the time to encode the whole DVD and to watch it just fpr
 checking, whether everything looks ok...

 Is there any other "rule of thumb" or another technical trick (other
 than scaling or using 5 instead of 2 CDRWs) to circumvent my problem
 ?

 I have used the follwing settings (other settings are the default
 ones):

 #CMP="2"
 #QUANT="mpeg_quant"
 #BITRATE="1345"
 #VB_QFACTOR="vb_qfactor=1.25"
 #VB_QOFFSET="vb_qoffset=0.6"
 #VMAX_B_FRAMES="vmax_b_frames=1"
 #BITRATE="1345"
 #SCALE=720
 #VOPTS="-vop crop=720:296:0:54,scale -zoom -xy $SCALE"

 Any hints? Or did I something totally wrong ???

 Keep Hacking!
 Meino


------

Kind regards,
Meino


colin> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
colin> On Sun, 2 Feb 2003 18:29:38 -0300 Martin Pavon <martin_199ar at yahoo.com.ar>
colin> wrote:
colin> 
colin> >>  read about at http://rguyom.ath.cx/. Keep in mind these are optimized
colin> >                 ^^^^^^^^^^^^^^^^^^^^^
colin> > I get time out operation, may be it is down or a typo, can you confirm
colin> > the url? 
colin> 
colin> Afaik ath.cx is a dyndns service - rguyom.ath.cx is on DSL or something.
colin> 
colin> Cheers,
colin> -- 
colin> Colin
colin> http://dudusdl.sf.net/ : a free Puzzle Bubble clone
colin> 
colin> _______________________________________________
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colin>