[MPlayer-DOCS] r21931 - trunk/DOCS/xml/en/encoding-guide.xml
subversion at mplayerhq.hu
Mon Jan 15 08:16:03 CET 2007
Date: Mon Jan 15 08:16:03 2007
New Revision: 21931
update x264's subq otion description
--- trunk/DOCS/xml/en/encoding-guide.xml (original)
+++ trunk/DOCS/xml/en/encoding-guide.xml Mon Jan 15 08:16:03 2007
@@ -3658,7 +3658,8 @@
This is usually enough to be visible.
- <option>subq=6</option> is the slowest, highest quality mode.
+ <option>subq=6</option> is slower and yields better quality at a reasonable
In comparison to <option>subq=5</option>, it usually gains 0.1-0.4 dB
global PSNR with speed costs varying from 25%-100%.
Unlike other levels of <option>subq</option>, the behavior of
@@ -3670,6 +3671,14 @@
in low-motion scenes. Note that it is still recommended to always set
<option>bframes</option> to something other than zero (see below).
+ <option>subq=7</option> is the slowest, highest quality mode.
+ In comparison to <option>subq=6</option>, it usually gains 0.01-0.05 dB
+ global PSNR with speed costs varying from 15%-33%.
+ Since the tradeoff encoding time vs. quality is quite low, you should
+ only use it if you are after every bit saving and if encoding time is
+ not an issue.
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