[Fwd: Re: [MEncoder-users] new doom9 codec comparission]

Corey Hickey bugfood-ml at fatooh.org
Fri Dec 2 21:33:58 CET 2005

This is the second of two messages Doom9 sent me about the codec comparison.


-------- Original Message --------
Subject: Re: [MEncoder-users] new doom9 codec comparission
Date: Fri, 2 Dec 2005 09:42:24 +0100 (CET)
From: Doom9 Feedback Hotline <feedback123 at doom9.org>
Reply-To: feedback123 at doom9.org
To: Corey Hickey <bugfood-ml at fatooh.org>
References: <20051124023705.GE11024 at MichaelsNB>
<438FD629.1050509 at fatooh.org>

This may have something to do with decoding for playback and whatever
color conversions are done during the process. On Windows these days we
have a full YV12 chain so no color conversions at all.. I don't know if
mencoder goes RGB at some point, but that shouldn't incurr much of a
change. More importantly is playback though. On Windows there is a
variety of renderers, all have their advantages and pitfalls, and there
are those that tend to change the color somewhat. During previous codec
comparisons, I actually had to change the renderer because shots of
certain codecs had a different brightness level than shots of the
source. So, if you play the DVD in mplayer and the encoded content, and
they both have the same brightness level, I wouldn't worry about it. If
there was something wrong with mencoder, people would've found it (megui
used mencoder exclusively for encoding up until June).


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