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The Best??

March 29 2004 at 10:22 PM
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Richard Bunkley  (Login rbunkley)
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Hi All,
I posted about 1080i vs 720p got a bunch of different answers, For me the 1080i is best, for others it seems that 720p is best. I appreciated all of the responses! It seems to me that we are going to have another Beta vs Vhs War here. As you all know Vhs won.
I never really saw that much difference between the two, but Vhs could recored 4 hrs and Beta could only do 3. I bought my system back in 1977 and got Vhs only because I could record all of a football game which sometimes ran over 3 hours. I paid by the way $1000.00 for first Vhs recorder! Someone posted here that the networks were going to the 720p format. Maybe, I'm wrong here, but I thought that NBC,CBS,were 1080i and only ABC was 720p? I know that Espn is 720p but they don't broadcast that much in hi dev and they really suck! As far as the motion thing, I have never seen any difference between 1080i and 720p. I also think that the Dschd and Hdnet are 1080i and there broadcast are excellent! The bottom line is, hi dev is great in either format, I for one will take either one! P.S. Am I the only one on this board that has a hi dev recorder? I have a 921 from dish and would not trade it for anything! I know that when you can get one being it either from Dish, Direct or Cable you will become as spoiled as I am!!

 
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chuckken
(Login chuckenn)
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Re: The Best??

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March 29 2004, 10:55 PM 

If your display is a native 1080i then 1080i will look better...If your display is a native 720p then 720p will look better...period. Richard finally got it through my head...It now just seems like common sense.

 
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(Login KQ6QV)
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Re: The Best??

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March 29 2004, 11:11 PM 

I believe live athletic events look better on 720p, but most other things look better with 1080i. There is no technical reason why a network can’t switch formats, choosing the format according to the program content. I believe this will eventually be common. I can think of two reasons why this is not presently done. 1. It is a complication the networks don’t want right now. 2. There are a lot of ideologues who think there must be a best format, and that they must find it and then win over everybody else. These people make enough noise to convince the less-technical decision makers into thinking it’s true.

 
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Richard Fisher
(Login mastertechtv)
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Re: The Best??

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March 30 2004, 12:06 AM 

The future of display versus source does not bode well. Only CRT and possibly GLV have the ability to morph into artifact free multiple native scan rates. This is flat out impossible for digital displays. Since they will be pushing CRT to the side our future is digital or fixed pixel display. It sure would be nice to have one format in that future and my vote is for 1080P30, 1080P24 and 1080P60. 1080P60 is the only one that would need to be added but with the WM9 codec it now can be done.

Richard F. Fisher
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(Login rprophecy)
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re: The Best??

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March 30 2004, 3:08 AM 

huh.....?

 
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(Login KQ6QV)
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Re: The Best??

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March 30 2004, 3:51 AM 

All true. But most viewers are either sports intense or sports averse, and they can pick a display that fits that. For me, a 1080i DLP, if well made, would be ideal. Rescaling 720p to 1080p is not that bad, and on those days when it mattered to me, showing 720p using half of the screen face could give a perfect rendering. (For front projector people, a lens change would restore full size. This might even work for RPs.)


    
This message has been edited by KQ6QV on Mar 30, 2004 4:03 AM


 
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Richard Fisher
(Login mastertechtv)
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Re: The Best??

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March 30 2004, 9:33 AM 

Remapp the pixels? Change lenses?

Interesting suggestion...

 
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keithf
(Login curiouskeith)
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Re: The Best??

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March 30 2004, 1:29 PM 

I think that in the end all of our 720p 1080i sets will be relegated to the basement, with our old beta's. The shiny new 1080p set will replace it. It's just a matter of time.

 
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(Login KQ6QV)
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Re: The Best??

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March 30 2004, 3:09 PM 

I am planning on writing something about 1080p, just as soon as I figure out what 1080p is.

 
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keithf
(Login curiouskeith)
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Re: The Best??

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March 30 2004, 3:57 PM 

Yeah I hear ya. I've never quite understood how a 720p tv shows a 1080i signal.

 
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Allen
(Login akirby)
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Re: The Best??

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March 30 2004, 4:37 PM 

Aren't there only 2 possibilities?

1 - One (or each) of the 2 540 line fields is upconverted to 720 lines (lines are added)

or

2 - two 540 line fields are assembled into 1080 lines and lines are removed or combined to get down to 720 lines.

The 720 lines are then displayed progressively.

 
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Richard Fisher
(Login mastertechtv)
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Re: The Best??

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March 30 2004, 5:08 PM 

Your are close Allen.

1080I into 720P

1. Deinterlace and scale down to 1280X1920=720P

2. Scale each field to 1280X720=720P

Probably 2 since that requires the least amount of effort.

720P into 1080I

1. Drop every other frame, interlace the signal and scale to 1920X1080=1080I

2. Scale down to 1920X540=540P

Probably 2 since that requires the least amount of effort.


As for 1080P...

If you understand 480I to 480P then 1080I to 1080P follows the same concept.

 
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(Login KQ6QV)
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Re: The Best??

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March 30 2004, 5:30 PM 

Well, that’s one interpretation of 1080p. There are other interpretations in common usage.

 
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chuckken
(Login chuckenn)
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Re: The Best??

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March 30 2004, 6:07 PM 

All this talk about "the best" and 1080P got me thinking about my dream TV...(anyone got $16,500.00 to loan me?). Mits WL82913

Go here to see this awesome set...
http://www.abesofmaine.com/viewproduct.asp?id=mtwl82913

 
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Richard Fisher
(Login mastertechtv)
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Re: The Best??

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March 30 2004, 8:11 PM 

The "Best" you are referring to is front screen projection. Your TV outperforms the Mits you posted as well as Mits own line of CRT RPTV.

 
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(Login chuckenn)
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Re: The Best??

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March 30 2004, 8:22 PM 

No kidding...Really??? Cooooooooooooooooooool...!!! I thought cause it was 1080P that it would somehow be the best...plus for $16,500.00 you would think it would be!

BTW, my tv was supposed to be delivered today but there was some mix up at the Atlanta trucking location...it will be here tomorrow...

 
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Richard Fisher
(Login mastertechtv)
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Re: The Best??

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March 30 2004, 9:19 PM 

>>Your TV outperforms the Mits you posted as well as Mits own line of CRT RPTV.

Let me rephrase that...

Your TV and Mits own line of CRT RPTV outperforms the Mits you posted.

Unfortunately resolution is a number that consumers are attracted to I suppose because on the surface it sure seems simple. Resolution is just one facet of imaging and while this Mits has the res it suffers in so many other areas.

But, in the right application it could perfrom reasonably well.

 
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