[SCM] libav/experimental: Clarify convergence_duration.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit e7f656d5fa0596c38bb0135d392c3408c237963e
Author: Michael Niedermayer <michaelni at gmx.at>
Date:   Wed Sep 10 12:51:49 2008 +0000

    Clarify convergence_duration.
    
    Originally committed as revision 15291 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 594cbe7..072be39 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -80,11 +80,13 @@ typedef struct AVPacket {
     int64_t pos;                            ///< byte position in stream, -1 if unknown
 
     /**
-     * This is the time difference in stream timebase units from the pts at which
-     * the output from the decoder has converged independent from the availability
+     * This is the time difference in stream timebase units from the pts of this
+     * packet to the point at which the output from the decoder has converged
+     * independent from the availability
      * of previous frames (that is the frames are virtually identical no matter
      * if decoding started from the very first frame or from this keyframe).
      * is AV_NOPTS_VALUE if unknown.
+     * This field is not the display duration of the current packet.
      *
      * The purpose of this field is to allow seeking in streams that have no
      * keyframes in the conventional sense. It corresponds to the

-- 
Libav/FFmpeg packaging