JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Default generated AFD values when down-converting to SD Source image is presumed based on the conversion that has been selected. Source aspect ratio Presumed source image Conversion option Converted AFD and aspect ratio Converted image 4:3 SD not widescreen No conversion AFD = 1001 AR = 4:3 SD 16:9 SD widescreen No conversion (only if ARC set to ‘stretch’) AFD = 1010 AR = 16:9 SD 16:9 HD Scale down letterbox AFD = 1010 AR = 4:3 SD “bars” Scale down Crop horizontal AFD = 1001 AR = 4:3 SD “crop” Scale down AFD = 1010 AR = 16:9 SD “stretch” Scale down Crop horizontal Letterbox AFD = 1011 AR = 4:3 SD “half bars” Parent topic: Default generated AFD values