forgot ...

Originally committed as revision 2658 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avidec.c

@@ -184,6 +184,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
 
                 st = s->streams[stream_index];
                 ast = st->priv_data;
+                st->codec.stream_codec_tag= handler;
                 
                 get_le32(pb); /* flags */
                 get_le16(pb); /* priority */