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Panasonic P2HD / DVCPRO HD Camcorders
All AG-HPX and AJ-PX Series camcorders and P2 / P2HD hardware.


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Old June 1st, 2005, 12:54 PM   #16
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Join Date: Nov 2004
Location: Canada
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Bah. This is just semantics now. The order and the methods ARE important. Ultimately, if you carry "scaling = compression" to it's logical conclusion, you can state that scaled SD video = HD... which networks actually do.

-Steve
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Old June 1st, 2005, 01:06 PM   #17
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Join Date: Sep 2003
Location: Ottawa, Canada
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Steven, you're spot on right!

I guess what I'm getting at is that if you feed 1080i60 1920x1080 4:2:2 into a DVCproHD tape deck, and then play it back out over SDI, what you get is 1920x1080 4:2:2, but it looks worse as it's been compressed. It's only internally that the tape has the HD video as a non-square pixel resolution, but if you didn't know what was going onside the deck, you'd only ever see square pixel HD video.

As for broadcasters scaling SD to HD and calling it HD, yet, it happens :-(

Graeme
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