[MPlayer-users] After updating - Faster encode, lower quality

Krzysztof Duchnowski amidk75 at gmail.com
Mon Mar 1 17:31:03 CET 2010

andrew at WARnux.com pisze:

>>> I've been using x264 to encode videos now for months.  Encoding a full
>>> length movie used to take about 11 hrs and the quality was splendid.  I
>>> built the latest mplayer/mencoder and x264 a few days ago and now my 
>>> encodes only take about 4 hours but the quality is degraded.  What 
>>> really confuses me is that I didn't change my command line parameters 
>>> at all.
>>> How is this possible?
>> Did you used CRF mode?
>> If yes then for month now (or two) CRF mode not reflect QP anymore but 
>> instead it is a "Quality factor" and thus considerable good quality 
>> you could achieve is with CRF in 18-21 range.
> Yes, CRF mode.  Was this a change in x264 or a change in mencoder?  
> Anyone know what r number?

I don't use the MEncoder - it is x264 issue thought.

Krzysztof 'DK75' Duchnowski
GetFirefox - http://www.mozilla.com/firefox/
Konfiguracja UTF-8 dla czytników - http://evil.pl/pip/utf/

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