Adds encoding setting examples for lavc and XviD.

Remove the references to constant quant in x264 section (Jeff did not like that :-) ).
Put all examples in a table so that it they are easier to read.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16597 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 147 insertions, 25 deletions

diff --git a/DOCS/xml/en/encoding-guide.xml b/DOCS/xml/en/encoding-guide.xml
index c1d87eb17b..193283d5e9 100644
--- a/DOCS/xml/en/encoding-guide.xml
+++ b/DOCS/xml/en/encoding-guide.xml
@@ -2507,6 +2507,62 @@ An example with AC3 compression:
 </itemizedlist>
 </sect2>
 
+<sect2 id="menc-feat-mpeg4-lavc-example-settings">
+<title>Encoding settings examples</title>
+
+<para>
+  The following settings are examples of different encoding
+  options combinations that affect the speed VS quality tradeoff
+  given the same target bitrate.
+</para>
+
+<para>
+  All the encoding settings were tested on a 720x448 @30000/1001 fps
+  video sample, the target bitrate was 900kbps, and the machine was an
+  AMD-64 3400+ at 2400 Mhz in 64 bits mode.
+  Each encoding setting features the measured the encoding speed (in
+  frames per seconds) and the PSNR loss (in dB) compared to the "Very
+  high quality" setting.
+  Please understand that depending on your source, your machine type
+  and the development breakthrough, you may get very different results.
+</para>
+
+<para>
+<informaltable frame="all">
+<tgroup cols="4">
+<thead>
+<row><entry>Description</entry><entry>Encoding options</entry><entry>speed (in fps)</entry><entry>Relative PSNR loss (in dB)</entry></row>
+</thead>
+<tbody>
+<row>
+  <entry>Very high quality</entry>
+  <entry><option>vcodec=mpeg4:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vmax_b_frames=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:vme=5:naq:qns=2</option></entry>
+  <entry>6fps</entry>
+  <entry>0dB</entry>
+</row>
+<row>
+  <entry>High quality</entry>
+  <entry><option>vcodec=mpeg4:mbd=2:trell:v4mv:last_pred=2:dia=-1:vmax_b_frames=2:vb_strategy=1:cmp=3:subcmp=3:precmp=0:vqcomp=0.6:turbo:psnr</option></entry>
+  <entry>15fps</entry>
+  <entry>-0.5dB</entry>
+</row>
+<row>
+  <entry>Fast</entry>
+  <entry><option>vcodec=mpeg4:mbd=2:trell:v4mv:turbo:psnr</option></entry>
+  <entry>42fps</entry>
+  <entry>-0.74dB</entry>
+</row>
+<row>
+  <entry>Realtime</entry>
+  <entry><option>vcodec=mpeg4:mbd=2:turbo:psnr</option></entry>
+  <entry>54fps</entry>
+  <entry>-1.21dB</entry>
+</row>
+</tbody>
+</tgroup>
+</informaltable>
+</para>
+</sect2>
 
 <sect2 id="custommatrices"><title>Custom inter/intra matrices</title>
 
@@ -3186,6 +3242,64 @@ codec</title>
 </tgroup>
 </informaltable>
 </sect2>
+
+<sect2 id="menc-feat-xvid-example-settings">
+<title>Encoding settings examples</title>
+
+<para>
+  The following settings are examples of different encoding
+  options combinations that affect the speed VS quality tradeoff
+  given the same target bitrate.
+</para>
+
+<para>
+  All the encoding settings were tested on a 720x448 @30000/1001 fps
+  video sample, the target bitrate was 900kbps, and the machine was an
+  AMD-64 3400+ at 2400 Mhz in 64 bits mode.
+  Each encoding setting features the measured the encoding speed (in
+  frames per seconds) and the PSNR loss (in dB) compared to the "Very
+  high quality" setting.
+  Please understand that depending on your source, your machine type
+  and the development breakthrough, you may get very different results.
+</para>
+
+<para>
+<informaltable frame="all">
+<tgroup cols="4">
+<thead>
+<row><entry>Description</entry><entry>Encoding options</entry><entry>speed (in fps)</entry><entry>Relative PSNR loss (in dB)</entry></row>
+</thead>
+<tbody>
+<row>
+  <entry>Very high quality</entry>
+  <entry><option>chroma_opt:vhq=4:bvhq=1:quant_type=mpeg</option></entry>
+  <entry>16fps</entry>
+  <entry>0dB</entry>
+</row>
+<row>
+  <entry>High quality</entry>
+  <entry><option>vhq=2:bvhq=1:psnr:chroma_opt:quant_type=mpeg:psnr</option></entry>
+  <entry>18fps</entry>
+  <entry>-0.1dB</entry>
+</row>
+<row>
+  <entry>Fast</entry>
+  <entry><option>turbo:vhq=0:psnr</option></entry>
+  <entry>28fps</entry>
+  <entry>-0.69dB</entry>
+</row>
+<row>
+  <entry>Realtime</entry>
+  <entry><option>turbo:nochroma_me:notrellis:max_bframes=0:vhq=0:psnr</option></entry>
+  <entry>38fps</entry>
+  <entry>-1.48dB</entry>
+</row>
+</tbody>
+</tgroup>
+</informaltable>
+</para>
+</sect2>
+
 </sect1>
 
 <sect1 id="menc-feat-x264">
@@ -3658,40 +3772,48 @@ codec</title>
   The following settings are examples of different encoding
   options combinations that affect the speed VS quality tradeoff
   given the same target bitrate.
-
-  If you are aiming at perfect quality without too much thinking and
-  no size limitation, a low constant quantizer encode (like with
-  <option>qp_constant=18</option>) with no B-frames
-  (<option>bframes=0</option>) will probably look very good, but
-  will needlessly spend lots of bits to encode details that could be
-  coded more wisely using some advanced settings.
 </para>
 
 <para>
   All the encoding settings were tested on a 720x448 @30000/1001 fps
   video sample, the target bitrate was 900kbps, and the machine was an
   AMD-64 3400+ at 2400 Mhz in 64 bits mode.
-  Each encoding setting is followed by the encoding speed (in frames
-  per seconds), the compression efficiency loss (in percent of bitrate)
-  compared to the "very high quality" setting, and the PSNR loss (in dB).
-  Please understand that depending on your source your machine type
+  Each encoding setting features the measured the encoding speed (in
+  frames per seconds) and the PSNR loss (in dB) compared to the "Very
+  high quality" setting.
+  Please understand that depending on your source, your machine type
   and the development breakthrough, you may get very different results.
 </para>
 
-<itemizedlist>
-<listitem><para><emphasis role="bold">Very high quality:</emphasis>
-<option>subq=6:4x4mv:8x8dct:me=3:frameref=5:bframes=3:b_pyramid:weight_b</option>
-6fps, 0%, 0dB.
-</para></listitem>
-<listitem><para><emphasis role="bold">High quality:</emphasis>
-<option>subq=5:4x4mv:8x8dct:frameref=2:bframes=3:b_pyramid:weight_b:psnr</option>
-13fps, -13%, -0.89dB.
-</para></listitem>
-<listitem><para><emphasis role="bold">Fast:</emphasis>
-<option>subq=4:bframes=2:b_pyramid:weight_b:psnr</option>
-17fps, -20%, -1.48dB.
-</para></listitem>
-</itemizedlist>
+<para>
+<informaltable frame="all">
+<tgroup cols="4">
+<thead>
+<row><entry>Description</entry><entry>Encoding options</entry><entry>speed (in fps)</entry><entry>Relative PSNR loss (in dB)</entry></row>
+</thead>
+<tbody>
+<row>
+  <entry>Very high quality</entry>
+  <entry><option>subq=6:4x4mv:8x8dct:me=3:frameref=5:bframes=3:b_pyramid:weight_b</option></entry>
+  <entry>6fps</entry>
+  <entry>0dB</entry>
+</row>
+<row>
+  <entry>High quality</entry>
+  <entry><option>subq=5:4x4mv:8x8dct:frameref=2:bframes=3:b_pyramid:weight_b:psnr</option></entry>
+  <entry>13fps</entry>
+  <entry>-0.89dB</entry>
+</row>
+<row>
+  <entry>Fast</entry>
+  <entry><option>subq=4:bframes=2:b_pyramid:weight_b:psnr</option></entry>
+  <entry>17fps</entry>
+  <entry>-1.48dB</entry>
+</row>
+</tbody>
+</tgroup>
+</informaltable>
+</para>
 </sect2>
 
 </sect1>