return 0 as stream index if only one stream, this is completely non standard, fix...

Originally committed as revision 6528 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/mxf.c b/libavformat/mxf.c
index 2d67391..d0fb2f0 100644 (file)
--- a/libavformat/mxf.c
+++ b/libavformat/mxf.c
@@ -214,7 +214,8 @@ static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
         if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
             return i;
     }
-    return -1;
+    /* return 0 if only one stream, for OP Atom files with 0 as track number */
+    return s->nb_streams == 1 ? 0 : -1;
 }
 
 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)