Suppress confusing message when vpre does not exist.

diff --git a/src/modules/avformat/consumer_avformat.c b/src/modules/avformat/consumer_avformat.c
index f8c06bbc6d86c3358b425271c8faaa01539a8cbf..4128cedeaea0d93d934ff30cfe0ac70495347f13 100644 (file)
--- a/src/modules/avformat/consumer_avformat.c
+++ b/src/modules/avformat/consumer_avformat.c
@@ -641,7 +641,8 @@ static AVStream *add_video_stream( mlt_consumer consumer, AVFormatContext *oc, i
                                        
                                        mlt_properties_close( p );
                                        p = mlt_properties_load( path );
-                                       mlt_properties_debug( p, path, stderr );
+                                       if ( mlt_properties_count( p ) > 0 )
+                                               mlt_properties_debug( p, path, stderr );
                                        free( path );   
                                }
                        }