Mentor

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15 Messages

Friday, July 13th, 2012 1:39 AM

what's up with 1080i setting but no 1080p?

So I ordered HD upgrade. On the DVR settings I figured I'd see what settings there are, so I go the screen settings and the highest one is 1080i...

What's up with that? Am I really getting interlaced frames? Can this DVR not output 1080p?

What am I missing here?

I have to believe you guys are getting 1080p...

Accepted Solution

Official Solution

Expert

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1.3K Messages

13 years ago

No channels broadcast in 1080p on any TV provider.  The extent of 1080p programming on any TV provider is DirecTV and Dish Network providing some PPV movies in 1080p.

Mentor

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15 Messages

13 years ago

Oh, I did not know that. I guess it's a bandwidth thing.

Thanks for the info.

Expert

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1.3K Messages

13 years ago

Well, there are no channels that broadcast in 1080p.

Master

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85 Messages

13 years ago

If you have a newer set capable of 1080p native thats what you will be looking at with 1080i.

Mentor

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15 Messages

13 years ago

What do u mean? The TV is 1080p but the signal is only 1080i right?

Master

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85 Messages

13 years ago


@longhornsk57 wrote:
What do u mean? The TV is 1080p but the signal is only 1080i right?

It will take the 1080i signal and scale it to the native resolution which on most newer panels can be 720p (LCD) ,768p (Plasma) or 1080p (both LCD and Plasma) depending on brand and model.

Mentor

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15 Messages

13 years ago

I don't see how it can take interlaced and turn it into progressive though (I own a 1080p LCD and the DVR says it is outputting 1080i as the highest resolution), AFAIK you cannot take interlaced and "convert" it into progressive without losing a frame every time you do.

Master

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85 Messages

13 years ago

http://www.ihdtvreview.com/resolution_faqs.html

 

Think 1080i @ 60 frames per second versus 1080p @ 30 fps there is no loss of info just one nice continuos motion.

Mentor

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15 Messages

13 years ago

Right, but what we are getting is  1080i  @ 30FPS right?  So if it converts it 1080p we'd be getting 15FPS which would not be a nice continuous flow...

 

It seems to me the reason Uverse doesn't stream 1080p @ 30FPS is it would take up too much bandwidth, so why would they stream 1080i @ 60FPS?  Wouldn't that be the same bandwidth?

 

 

ACE - Expert

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28.3K Messages

13 years ago

No one streams 1080p.  Except for Blu-Ray and some On Demand from Dish (or is it Direct?) there is no 1080p. 

 

This is a broadcaster issue and not a carrier issue.

Mentor

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15 Messages

13 years ago

Yeah that was established near the first post.

What came up now was that Oz was saying my 1080p TV could somehow take a 1080i signal and turn it into a 1080p signal, and I was saying that isn't possible unless I lose half of my frames.  And unless Uverse is giving me 60FPS of 1080i (not sure why they'd be doing that) then what he's saying isn't possible, unless I missed something.

ACE - Expert

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28.3K Messages

13 years ago

"...It seems to me the reason Uverse doesn't stream 1080p @ 30FPS is it would take up too much bandwidth..."

 

That's the statement I was responding to but then again, I'm an i diot when it comes to all this technical mumbo-jumbo.

Mentor

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15 Messages

13 years ago

Yeah since I'm super late to the HD game, I figured we were up to the point where service providers could to 1080p now, but it looks like it is still too much bandwidth.  So yeah you're right, only Blu-Ray and game consoles and stuff can do it.  1080i is still TONS better than that SD crap I was watching before though, plus my phone actually outputs 1080p on everything i record like with the video camera or movies/streaming, so that's pretty cool to watch on a big 1080p TV.

Master

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85 Messages

13 years ago

No its 1080i at 60 frames which is odd even hence interlaced and 1080p is actually 24fps as is what film is or video which can be 30fps there is no such thing as 1080i 30fps as far as I know which would result in a bad picture IMO. 1080i = 30frames of even and 30 frames of odd where as 1080p has 30 frames of the combined in a single frame.

 

http://www.axis.com/products/video/camera/progressive_scan.htm

Mentor

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15 Messages

13 years ago

Right but what I am saying is that you are not going to get a 1080p quality picture from 1080i, you cannot get a progressive image from 2 interlaced images no matter what TV you have because the raw data isn't there.


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