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1080i vs 720p
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20. November 2006 @ 11:55 |
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for all the marbles bottom line which is better for the ps3 the 1080i or 720p
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HD_nut
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20. November 2006 @ 12:13 |
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It's 720/60 & 1080p/24
You have to decide what is best for yourself, 720p/60 for me.
To get the benefits of 1080p you would have to get a set over 65 inches and sit closer than a normal distance.
720p/60 is best signal for tv's up to 60 inches if you're watching at a normal distance and is has the better temporal resolution.
One guy told me once, he was going to sit 4 feet away from his set and wanted 1080p and didn't care that much of the lower frames per second.
But because of the size of the pixels and the faster frame rate, 720p/60 on a 720 or 768 set is better at a normal distance then 1080p/24 is on a 1080p set.
(50 inch set at a distance of 10 feet!)
720p/60
The fastest and best resolution format!
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Fixit78
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5. December 2006 @ 08:34 |
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Do you also loose response time when you jump to 1080I/P? For exemple, the 8ms response time found on most LCD sets today is valid at all resolution? Since im gonna do a lot of gaming on this set, i want my set to be as responsive as possible.
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Senior Member
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5. December 2006 @ 11:30 |
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Originally posted by cashman91:
for all the marbles bottom line which is better for the ps3 the 1080i or 720p
I think it would depend on what resolution the game is coded in. Sony has not mandated 720p or 1080i like MS and the 360. It would also depend on your display. If it is a fixed pixel display at 1080p, then to set the output of the PS3 to 720p just means more processing for your set to process the signal up to 1080p. There would be less to process in coding the signal from 1080i to 1080p. Don't get me wrong. I'm not saying one is better than the other. I would argue that your source should be as close to your screen's native resolution as possible.
This message has been edited since posting. Last time this message was edited on 5. December 2006 @ 11:36
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cp1966
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5. December 2006 @ 12:09 |
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I have a PS2 and a Sony 60" SXBR1. When playing the PS2 there is a lag, unless I switch he TV mode (not input) via the menu to "Game", then it works fine....
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chubzilla
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11. December 2006 @ 21:53 |
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What about 1080i feeds that get downconverted to 720p on my RPTV Sony 3LCD TV? Is it better to let the tv deinterlace the 1080i signal to 720p or should i let my HD box do it?
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HD_nut
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12. December 2006 @ 02:09 |
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1080i to 720p is a cross conversion, some as I view it as an upconversion to a Progressive mode it is not a down conversion.
Keep the box in 720p, it provides the 60 frame per second mode especially when you have a 720p brodcast.
If you keep the box in 1080i, the TV isn't giving you a real 60 frames per second if the box is in 1080i/30.
720p/60
The fastest and best resolution format!
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chubzilla
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12. December 2006 @ 08:35 |
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Originally posted by HD_nut:
1080i to 720p is a cross conversion, some as I view it as an upconversion to a Progressive mode it is not a down conversion.
Keep the box in 720p, it provides the 60 frame per second mode especially when you have a 720p brodcast.
If you keep the box in 1080i, the TV isn't giving you a real 60 frames per second if the box is in 1080i/30.
what i do is keep the 720p feeds in 720p and the 1080i feeds in 1080i. i let the TV deinterlace the 1080i feeds, as sony's deinterlacer is known for its quality
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HD_nut
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12. December 2006 @ 12:45 |
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I would keep the box in 720p and spare the set the job of deinterlacing, let the set process a Progressive signal from 720p to 768 rather than de interlace 1080i to 768p. The deinterlacer will do a great job for the over the air HD signals ABC etc...
I have done an experiment with a 1080i HD net signal and on the 768 LCD Sony XBR...paused the tivo with the box in 720p...then switched the box to 1080i and saw tiny little artifacts accompanying some of the detail, like little reflections... this was the evidence of a flickering signal going into the set.... mind you I had to really get up to the set to notice it, but it was there.... switched it back to 720p and they were gone.
It hard to see a substantial difference on an LCD for some reason, but on a 768p plasma you can really see the difference especially with a 480i digital signal.
The 480i signal is far better on the Panny 768p plasma with the 720p setting than the 1080i.
You want to provide that set with a Progressive signal for as long as you can....
720p/60
The fastest and best resolution format!
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chubzilla
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12. December 2006 @ 20:59 |
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thanx for the advice the tc actually does a 1280x720 format rather than 768.
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pevo
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18. December 2006 @ 19:46 |
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HD-Nut, since you seem to know mucho about this stuff what do you think about the Samsung 40" LCD HDTV (LN-S4051D).
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HD_nut
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19. December 2006 @ 11:55 |
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I'm not an expert on every set out there, I saw the Sammy LCD's and it had a great pic, but I am not a Samsung proponet.
If I was to go with an LCD flat panel I would get the Sony Bravia, The Sharp Aquos, Panasonic or Hatachi.
Plasma's I would get a Pioneer or Panasonic, all sets at 768p, but that's me.
You have to judge for yourself what you like best.
720p/60
The fastest and best resolution format!
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Paddawan
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19. December 2006 @ 16:48 |
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Hi im new here, i was redirected here from video help.com
I read through this whole thread, and at first i thought it really changed my outlook on HD TV's.
But now that i think about it i have some questions
1. lets just say all hd dvd and blu ray will be made in 1080p/24/i
Would it not be better to have a matching 1080i/p/24 TV?
2. Same with TV broadcasts.
HD_Nut are you saying it is better to havce a 768 p TV even if the broadcast will be in 1080i?
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HD_nut
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20. December 2006 @ 02:04 |
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Yes a Progressive signal is better is better than an interlaced one.
Read through some of my points in this thread about 768p/720p in regard to viewing at a normal distance and some of the math of the human eye.
The size of the pixels on a 1080p compared to the size of the pixels on a 768 set/ frame rates etc, what a standard signal looks better on...
I think at the end of the day, with most people viewing at a normal distance, 768 comes out on top.
With a good de-interlacer, 1080 cross converts to 768 Progressive very , very well!
720p/60
The fastest and best resolution format!
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Paddawan
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20. December 2006 @ 04:41 |
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But,
the 1080i/p will go through a 3:2 pulldown to equal the 60hz of all TV's? making up frames to do this right?
but the signal is not reaching the TV yet. it gets to the cable/sat box at witch point you tell the box what to do with the signal.
so you tell the box to convert 1080i/p signal to 720p signal, it does a 3:2 pulldown to make up the frames and sends it to the TV to be displayed. not 60 real frames
If you tell the box to be in 1080i/p mode then it takes the 1080i signal and still does a 3:2 pulldown so it can equal the 60hz of all TV's? not 60 real frames
so either way you do it the signal is getting molested right?
or am i wrong? can a TV display 30 fps?
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Senior Member
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20. December 2006 @ 05:57 |
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Hd_Nut...I think you may have covered this before but...What about the native resolution of FPD's? That is to say, is it better to try to get a signal that more closely matches your display if your cable/sat box can output it? If you have a 720p/768p set vs. 1080p set...use the closest respective resolution?
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Paddawan
Newbie
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20. December 2006 @ 12:14 |
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exactly,
HD_Nut-
Lets just say all broadcast are in 1080i
what kind of TV are you gonna buy?
720p or 1080i/p
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HD_nut
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20. December 2006 @ 12:39 |
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OK,
First off I wouldn't buy a 1080p set, but if I had one and the signal was 1080i I would leave it at 1080i because the 1080p set was tailor made to de interlace 1080i into 1080p.
My point still remains, I still believe that a 720p/60 signal will look better on a 768p set, than a 1080p/24 would look on a 1080p set...
Ave..Distance...size of pixels...frame rate...etc.
What is better a 1080i signal on a 1080p set or on a 768p set? I heard both sides of the debate and at a normal distance of 10 feet with a 50 inch set, math will tell you that you will see more resolution with the 768p set.
I heard the one side say that you're losing something in cross converting 1080i to 768p, then the other side says at that distance the resolution of the eye is max out.
My main point was, that there is a good case, pros/cons... that 720p/60 is the best signal of the ATSC.
Pixels per sec etc... motion... average distance.
720p/60
The fastest and best resolution format!
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HD_nut
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20. December 2006 @ 12:47 |
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To answer your question, if all signals were in 1080i I would still get the 768p set, because I would have to sit closer to the set to see the benefits of 1080p. I sit at an average distance, about 10 feet, because of the pixel size you should see a better picture with 768 at about 10 feet.
I seen how the Sony XBR cross converts to 768p, it's amazing.
720p/60
The fastest and best resolution format!
This message has been edited since posting. Last time this message was edited on 20. December 2006 @ 12:49
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AfterDawn Addict
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26. December 2006 @ 00:01 |
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This message has been edited since posting. Last time this message was edited on 26. December 2006 @ 11:22
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HD_nut
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26. December 2006 @ 05:07 |
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I like the article..
It's 1080i vs 1080p...
In the article it said this
"you need to make up, or create new frames. This is done using a method called 3:2 pulldown (or more accurately 2:3 pulldown). The first frame of film is doubled, the second frame of film is tripled, the third frame of film is doubled and so on, creating a 2,3,2,3,2,3,2 sequence. It basically looks like this: 1a,1b,2a,2b,2c,3a,3b,4a"
With 720p/60 there are no frames to make up, it's a real 60 frames per sec....
I hate to sound like a broken record but I say again, if the resolution of the eye maxes out around 768x1366 at 10 feet on a set up to 50-60 inches.... which is the better signal & set since your getting a real 60 fps with the 720p signal??
And as the article continued it said that there would be more info if it were a real 60 frames
"The only time you would see a difference is if you have native 1080p/60 content, "
720p/60 is a native 60 frames & if they were such a 1080p/60, your eye would not see the difference at 10 feet on an average size set... matter fact, at 10 feet the 768p set would look better because of the size of the pixels.
1080p/60 would have it benefits at a distance of 3 or feet away from the set, and most people don't watch TV that close... I can just imagine a superbowl party.
At the end of the with all the pros and cons 720p/60 wins out.
720p/60
The fastest and best resolution format!
This message has been edited since posting. Last time this message was edited on 26. December 2006 @ 05:17
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AfterDawn Addict
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26. December 2006 @ 10:28 |
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Correct me if I'm wrong, but as of now, 1080p/60 doesn't exist, maybe in the near future. Even one of the guy who worked for HD-DVD clearly stated that 1080p is mainly for "marketing purpose." And from those 2 links, which to my understanding is that if you/anyone who owned any of the latest 1080i technology (not the first/earlier generation), your TV can de-interlaced 1080i to 1080p and get a true 1080p.
This message has been edited since posting. Last time this message was edited on 26. December 2006 @ 10:29
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Paddawan
Newbie
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26. December 2006 @ 12:18 |
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I think you would get a fake 60 fps at 1080 resolution , by fake i mean its using 30fps and running that 3:2 pulldown algorythm on it to get the 30 extra frames. but the new frames it adds is not new its just doubling or tripling the same old 30 frames.
you can take one frame and run it 60 times in a second to get 60 frames per second but you will still only see the information from the 1 orginal frame.
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Paddawan
Newbie
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26. December 2006 @ 12:22 |
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HD_Nut
Your point is understood, by me at least,
720P signal is the best signal because of the pixel size at that resolution and also because of the fact that 60 real frames at 720 resolution has more information than 24/30 frames at 1080 reoslution.
on top of that, 720P/60 is broadcast NOW on some channels and 1080P/60 is not, as well as 1080p is not defined as 60 fps.
right?
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Blu_Ray
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3. January 2007 @ 21:53 |
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Originally posted by cashman91:
for all the marbles bottom line which is better for the ps3 the 1080i or 720p
That's EASY.
The PS3 automatically chooses 720p as the best resolution.
Just go to the PS3's "System Settings" and under "Display Settings" choose "Automatic" to let your PS3 find the best resolution. If you're HDTV doesn't support 1080p, the PS3 will automatically set your resolution to 720p rather than 1080i.
The PS3 system even ranks 720p higher than 1080i during the Display Setting's confirmation page.
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