* Add a duration field to the AVPacket

Originally committed as revision 459 to svn://svn.ffmpeg.org/ffmpeg/trunk

libav/avformat.h

@@ -15,6 +15,7 @@ typedef struct AVPacket {
     int size;
     int stream_index;
     int flags;
+    int duration;       
 #define PKT_FLAG_KEY   0x0001
 #define PKT_FLAG_DROPPED_FRAME   0x0002
 } AVPacket;