conversion->effect->set_int("source_space", output->output_color_space);
conversion->effect->set_int("destination_space", output_format.color_space);
conversion->output_color_space = output_format.color_space;
conversion->effect->set_int("source_space", output->output_color_space);
conversion->effect->set_int("destination_space", output_format.color_space);
conversion->output_color_space = output_format.color_space;