[MPlayer-DOCS] r21931 - trunk/DOCS/xml/en/encoding-guide.xml

gpoirier subversion at mplayerhq.hu
Mon Jan 15 08:16:03 CET 2007


Author: gpoirier
Date: Mon Jan 15 08:16:03 2007
New Revision: 21931

Modified:
   trunk/DOCS/xml/en/encoding-guide.xml

Log:
update x264's subq otion description


Modified: trunk/DOCS/xml/en/encoding-guide.xml
==============================================================================
--- 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.
   </para>
   <para>
-  <option>subq=6</option> is the slowest, highest quality mode.
+  <option>subq=6</option> is slower and yields better quality at a reasonable
+  cost.
   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).
   </para>
+  <para>
+  <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.
+  </para>
 </listitem>
 <listitem>
   <para>



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