[SCM] libav/experimental: Clarify sample_aspect_ratio.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 8e5af7a654f1d693c5b93d6500b74be7627ed219
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Wed Sep 3 17:43:00 2008 +0000

    Clarify sample_aspect_ratio.
    
    Originally committed as revision 15180 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 4c44376..18bde8e 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1448,6 +1448,7 @@ typedef struct AVCodecContext {
 
     /**
      * sample aspect ratio (0 if unknown)
+     * That is the width of a pixel divided by the height of the pixel.
      * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
      * - encoding: Set by user.
      * - decoding: Set by libavcodec.

-- 
Libav/FFmpeg packaging