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authorgpoirier <gpoirier@b3059339-0415-0410-9bf9-f77b7e298cf2>2005-05-08 14:30:53 +0000
committergpoirier <gpoirier@b3059339-0415-0410-9bf9-f77b7e298cf2>2005-05-08 14:30:53 +0000
commit873194cb417b1696f92d648c575e512649f3ad27 (patch)
tree8d6f5859fa13b1c19a1ff99f8d0b6a5e7e6d6706
parent4b3f9a5408e43274c22eda3b51ebaeea69a3b203 (diff)
downloadmpv-873194cb417b1696f92d648c575e512649f3ad27.tar.bz2
mpv-873194cb417b1696f92d648c575e512649f3ad27.tar.xz
explains what ARa is and a tries to improve the readability of the
paragraph about X and Y resolution git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15367 b3059339-0415-0410-9bf9-f77b7e298cf2
-rw-r--r--DOCS/xml/en/mencoder.xml4
1 files changed, 4 insertions, 0 deletions
diff --git a/DOCS/xml/en/mencoder.xml b/DOCS/xml/en/mencoder.xml
index 6224fb4935..00e1376cac 100644
--- a/DOCS/xml/en/mencoder.xml
+++ b/DOCS/xml/en/mencoder.xml
@@ -1185,6 +1185,9 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
Wc and Hc are the width and height of the cropped video,
</para></listitem>
<listitem><para>
+ ARa is the displayed aspect ratio, which usually is 4/3 or 16/9,
+</para></listitem>
+<listitem><para>
PRdvd is the pixel ratio of the DVD which is equal to 1.25=(720/576) for PAL
DVDs and 1.5=(720/480) for NTSC DVDs,
</para></listitem>
@@ -1195,6 +1198,7 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
Then, you can compute the X and Y resolution, according to a certain
Compression Quality (CQ) factor:
<systemitem>ResY = INT(SQRT( 1000*Bitrate/25/ARc/CQ )/16) * 16</systemitem>
+ and
<systemitem>ResX = INT( ResY * ARc / 16) * 16</systemitem>
</para>