- if ( multitrack->count > mlt_service_cache_get_size( MLT_MULTITRACK_SERVICE(multitrack), "producer_avformat" ) )
- mlt_service_cache_set_size( MLT_MULTITRACK_SERVICE(multitrack), "producer_avformat", multitrack->count + 2 );
+ if ( mlt_multitrack_count( multitrack ) > mlt_service_cache_get_size( MLT_MULTITRACK_SERVICE(multitrack), "producer_avformat" ) )
+ mlt_service_cache_set_size( MLT_MULTITRACK_SERVICE(multitrack), "producer_avformat", mlt_multitrack_count( multitrack ) + 2 );