[SBE] 480p

[Bo]

I've never tried it for broadcast, but many years ago we used to convert
480i to 480p to display on projectors.  On a 10' diagonal the difference was
amazing, it removed the obvious differences in the even and odd lines that
you normally see and made the picture as smooth as a VGA image.  The output
of the converter was HD15 VGA, so we never tried sending it to any
conventional monitor.
We did have a Pinnacle Targa 3000 NLE system about seven years ago that
would encode YUV 480p, but only uncompressed, and we couldn't afford that
much drive space at the time.  Bummer, I would have liked to have seen it
too.

Good luck, and let us know what you discover.

Bo Bratcher
Louisville MetroTV


-----Original Message-----
From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Gary
Stewart
Sent: Thursday, August 28, 2008 5:31 PM
To: sbe member discussion mail list
Subject: [SBE] 480p

Anyone using 480p?  How does it compare with 720p and 1080i, and of
course 480i?  Does it really "release 40% more resolution" as claimed in
an industry white paper many years ago.

[excerpt]

"One thing often not understood is that 525 interlaced cameras actually
record 40 per cent more vertical resolution than we can see on a
standard monitor.  When that video is upconverted, you release that 40
per cent of vertical information. And, because we are upconverting into
an oversampling domain the viewer perceives all of that extra 40 per
cent of resolution.  That's why when you do a direct one-to-one
upconversion the 525 (480) picture looks a lot better than you might
have expected."

[end of excerpt]

Gary Stewart
Cornerstone TV
412-824-3930


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