Quote:
Originally Posted by ceebee23
Folks,
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Here in Australia we use DVB-T which uses an anamorphic squeeze to deliver 16:9 images and when this is displayed on a 4:3 set the whole image is displayed looking something uncorrected like CinemaScope. Set top boxes have settings to provide 16:9, letterbox or a 4:3 center segment of the 16:9 image. (I assume the same options are available on US set top boxes).
But as I understand it ATSC does not use the anamorphic scheme ...
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What you described is not "an anamorphic scheme", but is simply filling the transmitted 16:9 digital raster with the 16:9 picture. Any anamorphic effects are due to the receiver box not properly formatting the output for the display. As you say, you can properly select letterbox or cropped center when feeding a 4:3 display. The "tall, thin" anamorphosis occurs if the receiver box is set for a 16:9 display but viewed on a 4:3 set. The situation is the same for both DVB and ATSC. This mistake could occur either through customer settings or through wrong settings at the transmitter in some cases.