Clarify sample_aspect_ratio.

Originally committed as revision 15180 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-03 17:43:00 +00:00 · 2008-09-03 17:43:00 +00:00 · 8e5af7a654
parent a2636c0fd5
commit 8e5af7a654
1 changed files with 1 additions and 0 deletions
--- 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.