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Posted by Joshua Zyber on 01/17/07 00:26
"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
news:45acfe89$0$5167$4c368faf@roadrunner.com...
>I don't accept ... from seeing the level of detail in the picture ...
>that this is just an upconverted NTSC signal. Yet it's 4:3, which
>rules out most of the HDTV standards (most of them are "widescreen").
>The "HDTV" light on the cable box is on (yes, that might only mean that
>it's digital), and it's on a channel (all 500-599 channels in this
>cable system) that is supposed to be exclusively HDTV. I note that
>1024x768 is a 4:3 format that is one of the approved HD formats, so 4:3
>aspect ratio does not always, automatically, mean it's SD and not HD
>[However, I don't think that's what they are broadcasting]. Most
>likely this signal [Brian Williams NBC nightly news] is 640x480
>progressive scan with a 60Hz refresh rate. That is a lot higher
>quality than standard NTSC analog TV (more than twice the data rate),
>although no 480 line format is considered to be HDTV.
There's really no debate to be had about this issue. If the nightly news
were shot on High Def video, it would fill your 16:9 TV. All HD video
cameras are natively 16:9 in aspect ratio. For example, The Today Show
recently switched to HD production. Compare the same program on the SD
channel and the HD channel. Then take another look at upconverted
nightly news and see if you're really so impressed by the level of
detail present.
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