int invert = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "invert" ) * 255;
// Render the frame
+ *format = mlt_image_yuv422;
if ( mlt_frame_get_image( this, image, format, width, height, writable ) == 0 && ( !use_luminance || ( int )mix != 1 ) )
{
// Get the alpha mask of the source