int mlt_frame_is_test_card( mlt_frame this )
{
- return mlt_properties_get_int( mlt_frame_properties( this ), "test_image" );
+ return mlt_deque_count( this->stack_image ) == 0 || mlt_properties_get_int( mlt_frame_properties( this ), "test_image" );
}
/** Check if we have a way to derive something than test audio.