Dell U2312HM - 0.6 ms input lag

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panzeroceania
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Re: Dell U2312HM - 0.6 ms input lag

Post by panzeroceania »

Fudoh wrote:No idea about the 500N1.

The "larger" Blackmagic units can record in RGB or YUV 4:4:4, both 8 and 10-bit, but I don't know of any device which could take a XRGB's VGA output and convert it to the proper HDMI Signal without running through a processor limited to 4:2:2.

On the other hand, in which codec would eventually you store your files without going down to 4:2:2 or even 4:2:0 ?
Apple Pro Res 4444 or maybe x264 in lossless mode?

I'm sure there are others also.

It would mainly be nice for archival purposes, depending on how valuable the video was I could just store it uncompressed.
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Fudoh
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

well, ok, but I would want an archive that I can actually play on standalone media players of my choice.....
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lettuce
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Re: Dell U2312HM - 0.6 ms input lag

Post by lettuce »

Do companies still make 4:3 monitors??
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Re: Dell U2312HM - 0.6 ms input lag

Post by beatsgo »

lettuce wrote:Do companies still make 4:3 monitors??
According to this article, they are still being manufactured, only in small quantities. Unfortunate news. :(
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

1920x1200 is 16:10, 1600x1200 would be 4:3, like the Nec 2190uxi
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lettuce
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Re: Dell U2312HM - 0.6 ms input lag

Post by lettuce »

beatsgo wrote:
lettuce wrote:Do companies still make 4:3 monitors??
According to this article, they are still being manufactured, only in small quantities. Unfortunate news. :(
Damn i better take care of my 1920x1200 capable Dell 2405FPW monitor then, i never realised they had more less stopped production of monitors capable of these resolutions :(
panzeroceania
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Re: Dell U2312HM - 0.6 ms input lag

Post by panzeroceania »

Fudoh wrote:well, ok, but I would want an archive that I can actually play on standalone media players of my choice.....
VLC 2.0 should have better x264 support when it comes out.
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Fudoh
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

better in terms of what ? I don't have a problem with x264 playback on the PC. It's the graphics card which causes the problems as it doesn't run on a hardware clock locked to the player.
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Re: Dell U2312HM - 0.6 ms input lag

Post by panzeroceania »

Fudoh wrote:better in terms of what ? I don't have a problem with x264 playback on the PC. It's the graphics card which causes the problems as it doesn't run on a hardware clock locked to the player.
sgrunt on TASvideos.org wrote:As you may have noticed, many of our most recent publications have a secondary video available encoded with a 10-bit build of h.264 in the YUV444 colour space. This provides superior visual quality, which, in many cases, can also be accomplished in a smaller file size.

In order to play these videos back, you will need a fairly recent media player; Windows users can use recent builds of LAV Filters or ffdshow-tryout as a codec to play them back, and users on other platforms can use recent media players depending on ffmpeg such as mplayer/mplayer2.

In the near future (likely after the release of VLC 2.0, which will support playback of these encodes as well), the site's primary video files will be moving to this format as well, so I encourage all of our viewers to ensure they have up-to-date media players that can play back these videos.
http://tasvideos.org/forum/viewtopic.ph ... 533#301224

I put that together, with you saying that you'd want something that you can actually play back in a media player, and assumed that VLC 2.0 would have these updates, thus making this kind of file easy to playback.

My problem is that I confused h.264 with x.264
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Ed Oscuro
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Re: Dell U2312HM - 0.6 ms input lag

Post by Ed Oscuro »

panzeroceania wrote:
Fudoh wrote:well, ok, but I would want an archive that I can actually play on standalone media players of my choice.....
VLC 2.0 should have better x264 support when it comes out.
VLC 2.0.1 is out already.

It has some pretty notable improvements, but x264...I don't know.

Fudoh: I'm surprised you don't have a genlocking video card...sorta...of course, that is a problem for monitors in general. I guess the only likely way this problem will be "fixed" will be the introduction of ever-faster framerates
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

I basically have a genlocked graphics card, when I use my BMD Multibridge for video output, but it doesn't help since the software (and audio for that matter) are still running on different clocks.

And I really don't care, since I have a nice media player setup which just works.

The "problem" with x264 playback on the usual software players was just caused by those stupid anime kiddies watching videos on notebooks in their dorm rooms and the even sillier "scene" groups who suddenly came up with the great idea to encode genuine 8-bit BD material in 10-bit to save a few megabytes in size when doing crappy 1-pass encodings.....
panzeroceania
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Re: Dell U2312HM - 0.6 ms input lag

Post by panzeroceania »

Well, I'm just spouting misinformation all around :P
Fudoh wrote:No idea about the 500N1.

The "larger" Blackmagic units can record in RGB or YUV 4:4:4, both 8 and 10-bit, but I don't know of any device which could take a XRGB's VGA output and convert it to the proper HDMI Signal without running through a processor limited to 4:2:2.
so to be clear then, does that mean that at least from a 15khz source through an XRGB to VGA, it should not have any 4:2:2 compression yet right? but the problem is that there is no way to capture (as far as we know) VGA without applying some kind of 4:2:2 or other video/color compression?

what about a DVDO product?
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Fudoh
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

DVDOs downsample the VGA input before processing. You would have to capture Full HD in order to get VGA resolution without downsampling. Not really worth the effort, is it ?
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Fu
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fu »

What ratio do you recommend playing with on MAME ? I can't find the correct settings. Playing yoko is ok, but tate is horrible, the image is stretched way too much vertically.
For example, everything for Ketsui on shmupmame 3.0 everything is on default except the ratio which is full (stretched using hardware). I tried different combinations for tate but nothing fits.
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

Why would you allow MAME to stretch to fullscreen if you want the game to run in 4:3 resolution no matter what the screen ratio is OR what pixel ratio the game uses ?
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Fu
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fu »

So that's the same as an arcade if I don't stretch to fullscreen ? I took a photo of it : http://imageshack.us/photo/my-images/82 ... 82iqh.jpg/
Looks correct. It's still a bit too big for me. I don't know if I should stay on yoko.
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Ed Oscuro
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Re: Dell U2312HM - 0.6 ms input lag

Post by Ed Oscuro »

That's no longer a 4:3 image, looks bad man. Having that extra vertical space might screw with your sense of timing and distance too.
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bcass
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Re: Dell U2312HM - 0.6 ms input lag

Post by bcass »

Did anyone else buy the U2312HM? Mine arrived today but sprite movement on games/emulators seems blurred to me. I have my PC connected to a 51" plasma as well and there's no blurring on that display. Both TV and monitor are connected by DVI. Is there some sort of settings on Windows I need to change?
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Re: Dell U2312HM - 0.6 ms input lag

Post by Ed Oscuro »

Usually the blur is governed by that marketing term "response time," (grey-to-grey transition time) unfortunately, which is something different than the thread is about.

The only thing I can think of to try is to check if there is a "gaming mode" in the monitor's menus.

Out of curiosity, what is it blurring in comparison to?
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bcass
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Re: Dell U2312HM - 0.6 ms input lag

Post by bcass »

There's no game mode. There's a "game" option in the colour menu, but it only affects colours.

The blurring is really quite horrendous. When playing the original arcade Darius for example, the player ship and all small enemies blur (badly) when moving either slow or fast. I tried disabling my plasma connection in case that was having any negative effects, but no joy (my graphics card is a Radeon HD 4890). Very disappointed. Avoid this piece of shit at all costs. Total waste of money.
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Re: Dell U2312HM - 0.6 ms input lag

Post by StarCreator »

This is a downside to all LCDs, really - but the blur on the recent Dell IPSes should be relatively similar to what you'd see on an equivalent TN.

You can try enabling "LCD overdrive" on either the monitor or the PC though.
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bcass
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Re: Dell U2312HM - 0.6 ms input lag

Post by bcass »

Overdrive is enabled by default on this monitor. It can only be enabled/disabled in the service menu. I've also enabled the LCD Overdrive option in Catalyst Control Center but the blurring is still there. I've been reading around a bit and it seems that the best way to minimize this sort of blurring is to buy a 120Hz model, which significantly increases the price. I doubt even that is going to perform as well as a £30 VGA CRT. It's weird that it only seems to afffect some sprites and not others. For example, a scrolling background will be perfectly clear while the sprites in front of it are blurred. There doesn't seem to be any blurring problems with vector based games either.
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Re: Dell U2312HM - 0.6 ms input lag

Post by StarCreator »

I don't think you're supposed to enable overdrive on both the output and display ends.
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bcass
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Re: Dell U2312HM - 0.6 ms input lag

Post by bcass »

Doesn't make any difference, the same blur is present when it's active on the panel and enabled or disabled on the OS.
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Re: Dell U2312HM - 0.6 ms input lag

Post by Ed Oscuro »

Just to confirm, did you try disabling overdrive on the panel but enabling it in your OS?

I was thinking about disabling overdrive, but I wonder if it wouldn't have an even worse effect on perceived lag (through blurring time). I don't think that it should affect the actual input lag time though.
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

How would overdrive on a OS-basis work ? Does it do anything else but enabling the overdrive function in the display (if communication with the display in enabled) ?
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bcass
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Re: Dell U2312HM - 0.6 ms input lag

Post by bcass »

No, it's different to the hardware (monitor) setting. Google it.
Ed Oscuro wrote:Just to confirm, did you try disabling overdrive on the panel but enabling it in your OS?
I've tried all possible combinations, the blur is always present in the instances I mentioned above.
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Fudoh
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

From google ATI seems to use the term "overdrive" as a mere boost/overclocking function for their GPUs. This has nothing to do with what is called overdrive in LCD technology. Or did I miss anything ?
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Re: Dell U2312HM - 0.6 ms input lag

Post by ZellSF »

Fudoh wrote:From google ATI seems to use the term "overdrive" as a mere boost/overclocking function for their GPUs. This has nothing to do with what is called overdrive in LCD technology. Or did I miss anything ?
You missed adding "LCD" to your Google search :P

Yes they have some sort of LCD overdrive function, I haven't heard of anyone actually ever using it though.
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Re: Dell U2312HM - 0.6 ms input lag

Post by Fudoh »

I tried again and still don't find ANY connection between what ATI calls overdrive in it's catalyst driver and what actual overdrive in LCDs is. Can you provide me a link ?
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