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Is 720p Important ?

Old 12-20-05, 03:48 PM
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Is 720p Important ?

Hi Guys,

Was just starting to look into Panasonic HDTVs and it seems that for 720p I would need to get Plasma, LCD or Rear projection(with LCD).

Would I be missing out if I chose a regular CRT HD Set which only does 1080i ?


Thanks
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Old 12-20-05, 05:48 PM
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The only thing you're missing out on is interlaced vs. progressive. They're both HD resolutions and there are some broadcast stations that use one standard and some that use the other. So depending on which channels you watch and what your display is capable of, some stations will always be converted from one to the other.
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Old 12-21-05, 10:50 AM
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Frankly, there is more 1080i programming than there is 720p, unless football is all you watch. 1080p would be the best, but it's still pretty expensive.

ABC/Disney is all 720p, as is Fox. Everything else is 1080i.
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Old 12-21-05, 06:21 PM
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But if I got a HDTV which only offered 1080i, it would simply convert 720p to 1080i ?

CRT based HD sets are a bit more in my price range and available in the size I want (im only looking for somewhere in the 32" range).
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Old 12-21-05, 06:59 PM
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Most do. But most HDTV receivers/cable boxes will, too. You just want to make sure one of them can so you don't miss out on some channels. Every now and then you will find a TV that only accepts 480i and 1080i, maybe 480p too. Just check the specs for its compatibility.
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Old 12-23-05, 03:39 AM
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Hi, my sony 57" crt does 720p and 1080i
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Old 12-23-05, 05:06 AM
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Originally Posted by CKY3k
Hi, my sony 57" crt does 720p and 1080i
Does what? Does accept both 720p and 1080i? Yes most brands do. I believe Mits is the only major brand that only accepts 480i/p and 1080i. All of the other majors brands will accept both 720p and 1080i but will scale to one or the other depending if its a fixed pixel display or a CRT display. For Mits you need to have your STB set to output to the native scan rate of the display.

This was one of the major reasons IMO for scaling DVD players. Since most displays couldn't display the native 480 progressive output without scaling the player manufacturers put scalers in that they thought could perform better than the TV's scaler.
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Old 12-23-05, 03:57 PM
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Hi, I'm a little confused by the 720p vs. 1081i references. Let's assume you have a progressive scan capable dvd player that kicks out 720p, but the TV is 1081i (converting the 720p dvd output into 1081i). Are you saying that you will not see the progressive scan image because the TV itself is not directly 720p or 1081p? Thanks.
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Old 12-23-05, 04:07 PM
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Yes. Every TV has a specific display resolution. If it is 720p, like most DLPs, EVERYTHING will come out 720p.

If your TV's actual display is 1080i, you probably want to set your DVDp to 1080i instead of 720p. Try them both, but very likely the 1080i will look better.

CRT-based TVs have often had 2 display resolutions. Those would be 480p (sometimes 540p) and 1080i. Usually for these TVs, everything 480i or 480p would be displayed as 480/540p. Everything 720p or greater would be displayed as 1080i.
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