How does 1080p look on a 4k display?

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SolMiester

Diamond Member
Dec 19, 2004
5,330
17
76
Im still not getting it, if a 4sq pixel (4k) uses the same space on a 27 inch panel as a 1080, how is the image any different IF the image is native 1080
 

hawtdawg

Golden Member
Jun 4, 2005
1,223
7
81
Because something something some guy on a forum somewhere, and 540p looks like poop. That's all I've put together so far.
 

toyota

Lifer
Apr 15, 2001
12,957
1
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Because something something some guy on a forum somewhere, and 540p looks like poop. That's all I've put together so far.
thats all you want to put together because its more fun for you to act like an ass which I guess makes you feel superior.

Warning issued for personal attack.
-- stahlhart
 
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hawtdawg

Golden Member
Jun 4, 2005
1,223
7
81
thats all you want to put together because its more fun for you to act like an ass which I guess makes you feel superior.

I'm sorry, what was your explanation again for why 1080p can't scale perfectly to a 4k screen again? Since we're all so confused, and you're not, perhaps you could take the time to put your fact-based explanation into one comment, so we can end this silly debate (if that's what you want to call it).
 

toyota

Lifer
Apr 15, 2001
12,957
1
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I'm sorry, what was your explanation again for why 1080p can't scale perfectly to a 4k screen again? Since we're all so confused, and you're not, perhaps you could take the time to put your fact-based explanation into one comment, so we can end this silly debate (if that's what you want to call it).
should I copy and paste everything for you so we can start the same exact debate all over again? :rolleyes:
 

motsm

Golden Member
Jan 20, 2010
1,822
2
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While toyota isn't explaining himself very well, and is wrong about pixel doubling, a lot of scalers don't use pixel doubling. So even if you should be able to get a perfect lossless scale, they still interpolate the resolution and blur it all to hell. So in other words, this would have to be looked at in a product by product basis to see which 4k displays have true pixel doubling.

Of course even if the monitor didn't have true pixel doubling, the scaling could look decent, since the interpolation algorithm has such a high DPI to work with. Still, I would never assume it looks fine without seeing it, as too many scalers stink.
 

Imouto

Golden Member
Jul 6, 2011
1,241
2
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It comes down to the footage original resolution, the encoding and the renderer (doing a resize).

If the image looks good at the original dpi it will look the same if the renderer is doing its job properly upscaling. In fact you have several options available to make it look the way you want.

With a good renderer like MadVR you can make it look the same or tweak it the way you like.
 

hawtdawg

Golden Member
Jun 4, 2005
1,223
7
81
should I copy and paste everything for you so we can start the same exact debate all over again? :rolleyes:

yes. please do copy and paste it.


And you took the bait once again. Stop it.


-Rvenger
 
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Subyman

Moderator <br> VC&G Forum
Mar 18, 2005
7,876
32
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While toyota isn't explaining himself very well, and is wrong about pixel doubling, a lot of scalers don't use pixel doubling. So even if you should be able to get a perfect lossless scale, they still interpolate the resolution and blur it all to hell. So in other words, this would have to be looked at in a product by product basis to see which 4k displays have true pixel doubling.

Of course even if the monitor didn't have true pixel doubling, the scaling could look decent, since the interpolation algorithm has such a high DPI to work with. Still, I would never assume it looks fine without seeing it, as too many scalers stink.

I'd say with the wide availability of 1080P content 4K TV manufacturers would have to support pixel doubling in their scalers.
 

motsm

Golden Member
Jan 20, 2010
1,822
2
76
I'd say with the wide availability of 1080P content 4K TV manufacturers would have to support pixel doubling in their scalers.
Ideally, but manufacturers aren't often looking to cater to the niche of enthusiasts who know about this stuff, and I'd never buy a 4k monitor without knowing for a fact it had it. Maybe that's just me.
 

Lepton87

Platinum Member
Jul 28, 2009
2,544
9
81
I have a 2560x1440 monitor and 720p still looks like crap, even though in theory every pixel in that resolution should just map to four physical pixels in my monitor and it shouldn't look any different then a native 720p 27' monitor, unfortunately it does look worse.
 

toyota

Lifer
Apr 15, 2001
12,957
1
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I have a 2560x1440 monitor and 720p still looks like crap, even though in theory every pixel in that resolution should just map to four physical pixels in my monitor and it shouldn't look any different then a native 720p 27' monitor, unfortunately it does look worse.
thank you
 

Imouto

Golden Member
Jul 6, 2011
1,241
2
81
I have a 2560x1440 monitor and 720p still looks like crap, even though in theory every pixel in that resolution should just map to four physical pixels in my monitor and it shouldn't look any different then a native 720p 27' monitor, unfortunately it does look worse.

Try the MPC-HC + MadVR combo and you will be pleasantly surprised. If you need help with them there are a couple of sites with nice guides for them and setting up the subs properly for your player.

If you're running a crappy player that doesn't even do a bicubic resize on 720p sources it's no different than going full screen in a web based flash video.
 

hawtdawg

Golden Member
Jun 4, 2005
1,223
7
81
I have a 2560x1440 monitor and 720p still looks like crap, even though in theory every pixel in that resolution should just map to four physical pixels in my monitor and it shouldn't look any different then a native 720p 27' monitor, unfortunately it does look worse.

go to the Nvidia control panel and disable GPU scaling and try that again. If it does look worse, it's only due to crappy scaling, and absolutely nothing in the world to do with the fact that it's "not native" like Toyota has been insisting this entire thread.
 
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Lepton87

Platinum Member
Jul 28, 2009
2,544
9
81
Try the MPC-HC + MadVR combo and you will be pleasantly surprised. If you need help with them there are a couple of sites with nice guides for them and setting up the subs properly for your player.

If you're running a crappy player that doesn't even do a bicubic resize on 720p sources it's no different than going full screen in a web based flash video.

I checked how desktop and games look at 720p resolution. Video files look fine.
go to the Nvidia control panel and disable GPU scaling and try that again. If it does look worse, it's only due to crappy scaling, and absolutely nothing in the world to do with the fact that it's "not native" like Toyota has been insisting this entire thread.
It was already set to perform scaling on display.
 

Phynaz

Lifer
Mar 13, 2006
10,140
819
126
While toyota isn't explaining himself very well, and is wrong about pixel doubling, a lot of scalers don't use pixel doubling. So even if you should be able to get a perfect lossless scale, they still interpolate the resolution and blur it all to hell. So in other words, this would have to be looked at in a product by product basis to see which 4k displays have true pixel doubling.

Of course even if the monitor didn't have true pixel doubling, the scaling could look decent, since the interpolation algorithm has such a high DPI to work with. Still, I would never assume it looks fine without seeing it, as too many scalers stink.

This is the answer.

I have never seen a decent scaler.
 

Allexz

Junior Member
Jan 6, 2014
1
0
0
thank you

Holy crap man, had to register for this.

Feel so bad for ya getting chewed at by 20 random guys either of which has a clue.


In theory doubling the pixels is awesome, too bad there just simply aint no way to force such a thing.

1080P on a 4K display _does_ simply look blurry as hell _unless_ it has a proper scaler built in.
 
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Timmyotule

Member
Aug 31, 2002
64
3
71
I tried 1280x800 on my Korean 2560x1600 monitor that only has a DVI connection and no scaling built into the monitor.

The AMD scaling that is done is much worse than I expected. Everything is fuzzy. It definitely doesn't just map one pixel to four for the higher resolution. Is there a way to get the AMD software scaler to do this?
 

Gloomy

Golden Member
Oct 12, 2010
1,469
21
81
I tried 1280x800 on my Korean 2560x1600 monitor that only has a DVI connection and no scaling built into the monitor.

The AMD scaling that is done is much worse than I expected. Everything is fuzzy. It definitely doesn't just map one pixel to four for the higher resolution. Is there a way to get the AMD software scaler to do this?

Try setting the desktop resolution before you start the game.
 

Lean L

Diamond Member
Apr 30, 2009
3,685
0
0
Lmao. This thread made my morning.

I'm all of a sudden reminded of having convos with a person I knew a while back who would try to change logic, reason, the laws of physics, and math in order to win an argument that he knew he was wrong in... Funny part is, just like now, it gains him nothing... unlike now, toyota now has these valiant efforts semi permanently recorded for all to see.

Anyways, assuming that the monitor is small enough, 1080p should look perfect on 2160p capable monitor. I just got a 1440p monitor and 1080p actually scales well enough with software. You can see that it's blurry, but sit back and all is dandy. Just don't try to do design work on the scaled image. Gaming, depending on genre should be fine.