extern mlt_frame mlt_frame_init( );
extern mlt_properties mlt_frame_properties( mlt_frame this );
extern int mlt_frame_is_test_card( mlt_frame this );
+extern int mlt_frame_is_test_audio( mlt_frame this );
extern double mlt_frame_get_aspect_ratio( mlt_frame this );
extern int mlt_frame_set_aspect_ratio( mlt_frame this, double value );
extern mlt_position mlt_frame_get_position( mlt_frame this );