Complete the video format enum.

Originally committed as revision 8100 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/flv.h

@@ -83,6 +83,8 @@ enum {
     FLV_CODECID_H263    = 2,
     FLV_CODECID_SCREEN  = 3,
     FLV_CODECID_VP6     = 4,
+    FLV_CODECID_VP6A    = 5,
+    FLV_CODECID_SCREEN2 = 6,
 };
 
 enum {