| Broadcasts in 1080P I believe it has been 8 (ish) years now that 1080P went commercial. Searching Google I know I am not the only one who has ever wanted to know, when will broadcasts be in 1080P? I'm still not sure what stations even broadcast in 1080i? Is there an updated list? Last I heard most were 720P. |
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 goober22Resident Duh-Huh Member
join:2001-12-28
Panama City, FL
kudos:1 | NBC & CBS broadcast in 1080i. ABC & FOX are 720p. I believe most cable channels are 1080i as well. I think 1080p is just a bunch of hype.
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 Hayward K A R - 1 2 0 CPremium
join:2000-07-13
Key West, FL
kudos:1 | reply to ArkW
NEVER 1080p takes too much bandwidth for broadcast. Because of the interlace 720p and 1080i take the same bandwidth space. 1080p takes twice as much
Technically might be possible but for any station programing the 3 SD sub channels it would mean dropping them while 1080p programing.
Goober PBS is 1080i as well.
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ke4pymPremium
join:2004-07-24
Charlotte, NC Reviews:
 ·VOIPo
 ·Verizon Broadban..
 ·Time Warner Cable
·Northland Cable ..
| said by Hayward:NEVER 1080p takes too much bandwidth for broadcast. Because of the interlace 720p and 1080i take the same bandwidth space. 1080p takes twice as much
Technically might be possible but for any station programing the 3 SD sub channels it would mean dropping them while 1080p programing.
Goober PBS is 1080i as well.
Back in the day, an analog channel had 6MHz of bandwidth. So, going into the digital transition, that same 6MHz of bandwidth was allocated. And the idea was the entire 6MHz slice was going to be used for a, single, HD channel.
Then someone got the bright idea to create sub-channels. So those channels will cut into the bandwidth of the primary channel. At first the FCC said no way, get back to work.
But they finally relented. I don't know the bandwidth requirements for 1080p. But I suspect they could fit in that 6MHz slice with some compression. Push an uncompressed Blu-Ray quality 1080p signal? Well, you're going to have to bond some channels...
The problem is switching every bit of technology in a TV station (including microwave relays, and the transmitter) to support 1080p.
With the digital transition also came the Sprint/Nextel spectrum repack. And a huge check from Sprint/Nextel to TV stations to buy new gear to get out of the way. Had that not happened at the about the same time as the transition, we probably would still have analog transmissions going on today (we still technically do for tiny stations).
Oh yeah, there's also the little fact that ATSC tuners don't support 1080p. All of those would have to be replaced, too. So would the gear for cable and Sat head ins. |
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goober22Resident Duh-Huh Member
join:2001-12-28
Panama City, FL
kudos:1 Reviews:
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| reply to Hayward
said by Hayward: Goober PBS is 1080i as well.
Oops, forgot about PBS.
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Certified Jenius! |
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| reply to ArkW
Your more likely to see on demand programming in 1080p. As they are flat MPEG files they can do double pass encoding to get the best possible compression.
DirecTV has some PPV / VOD in 1080p. |
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Hayward K A R - 1 2 0 CPremium
join:2000-07-13
Key West, FL
kudos:1 | Yeah so does DISH... but limited OD and PPV ad is DTV.
Even cable much the same.
Broadcast like their sub channels for old SD content and so do viewers... they aren't about to give that up for only marginally better 1080p vs 1080i at twice the bandwidth for 1080p, and more critical reception issues plus loss of the sub channels.
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