// Optimisation - no compositing required
if ( result.mix == 0 || ( result.w == 0 && result.h == 0 ) )
+ {
+ mlt_properties_set_data( properties, "geometries", NULL, 0, NULL, NULL );
return 0;
+ }
// Since we are the consumer of the b_frame, we must pass along these
// consumer properties from the a_frame