On Fri, 02 May 2008 20:02:49 -0500 Bruce Tomlin
<bruce#fanboy.net@[EMAIL PROTECTED]
> wrote:
| In article <fvfl7d022k1@[EMAIL PROTECTED]
>, phil-news-nospam@[EMAIL PROTECTED]
| wrote:
|
|> I don't (yet) get RTN (I'm working on it). For now, I'm sure they are
still
|> doing everything in 3:2 for the analog broadcasts. But if their
programming
|> is mostly made up of these older TV shows, why not start ****fting
things over
|> to a p24 format? I don't know if it would make much sense for these
shows to
|> do anything more than 480p24. Most are probably shot in 4:3 aspect
ratio for
|> TV, anyway, so going 720p24 would be pillarboxed, anyway (but solid set
black
|> for the sides would at least reduce bandwidth a bit more).
|
| And I'm waiting for them to turn RTN on over here. They've had the
| "slate" up for more than a month now. (And they've probably been
| breaking the E/I rules, even without showing any actual content other
| than the station ID loop.) The fun part was when their encoder was
| messed up for a couple of weeks and caused the picture to go blocky and
| jump back and forth.
|
| FYI, it's apparently going to be broadcasting in a 4:3 SD format. Since
| this network is clearly oriented toward being a subchannel, it doesn't
| make much sense to go HD. Widescreen SD maybe, but even then it's a bit
| tricky to do a telecine from 4:3 film to a 16:9 video.
If the film is 4:3 it should be telecined to something like 4:3. But if
one
is wanting to get more resolution than 480p24 can do, then pillarboxed
720p24
and 1080p24 is the only option since ATSC omitted any 4:3 high definition
formats. If they do telecine to pillarboxed, they should be sure the
encoder
holds all side blocks at solid black with the smallest bit pattern that
can
compress an 8x8 block into black.
--
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| Phil Howard KA9WGN (email for humans: first name in lower case at
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|
