mov: Read Flash's chpl variant

This is based off of F4V specs rather than any actual files

Originally committed as revision 24035 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mov.c

@@ -222,13 +222,15 @@ static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
 static int mov_read_chpl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
 {
     int64_t start;
-    int i, nb_chapters, str_len;
+    int i, nb_chapters, str_len, version;
     char str[256+1];
 
     if ((atom.size -= 5) < 0)
         return 0;
 
-    get_be32(pb); // version + flags
+    version = get_byte(pb);
+    get_be24(pb);
+    if (version)
         get_be32(pb); // ???
     nb_chapters = get_byte(pb);