shared_ptr<Image> save = background->convert_pixel_format (dcp::YUV_TO_RGB_REC709, AV_PIX_FMT_RGB24, false, false);
write_image (save, "build/test/image_test_" + suffix + ".png", "RGB");
shared_ptr<Image> save = background->convert_pixel_format (dcp::YUV_TO_RGB_REC709, AV_PIX_FMT_RGB24, false, false);
write_image (save, "build/test/image_test_" + suffix + ".png", "RGB");