Connecting DVI to HDTV

**rbinck** · 01-18-2005, 01:15 PM

moninfo only works with DVI or HDMI connections where the TV will talk back to the computer via the digital connection. VGA connections are analog and only one direction, out of the computer and into the TV.

wdgang · 01-18-2005, 05:29 PM

I did use the DVI output on the video card connecting to the TV thru a DVI-component adapter. Maybe I should always connect the VGA output to a PC monitor, other than to the TV's VGA input. Will try that.

**rbinck** · 01-18-2005, 09:32 PM

Your TV will need to have a DVI connection for moninfo to work.

wdgang · 01-19-2005, 01:41 AM

No wonder. Unfortunately my TV doesn't have one.

Garawin · 02-19-2005, 01:29 AM

Hi everone...Ok I have a Samsung TX-2675WH. It has a DVI port and says to use a DVI 25-pin cable, but it does state that it is not compatible with a pc signal. I am willing to try what has been outline in the earlier post. My question is this... I am planing on getting a ATI AIW 9800Pro, if I get the DVI to component converter will I have to worry about resolutions and timings? I don't need "the best" quility pic. I just need a screen for my HTPC . If I get it up and running hooed up like this I can try getting it working over a DVI cable later, I just want an easy hook-up for now.

**rbinck** · 02-19-2005, 01:22 PM

It states the DVI port is not PC compatable because it is set for a TV signal. That means there will be overscan and you can expect a desktop that the edges are off of the screen. It will be unusable as a computer monitor. The same will be the case going in through the component connections.

You can with some work get some of the HDTV resolutions to work, but since it is a CRT unit the only clear resolution will probably be 720 x 480 which will work great for DVDs, but a bit low for computer work. Most CRT based widescreen CRTs will not do better than about 1000 x 600. 4:3 CRTs are limited to about 800 x 600.

If you were thinking you could use the TV as your computer monitor, I think you will be disappointed.

Garawin · 02-19-2005, 07:20 PM

Well I just read afew of the stickies in the forum...should have done that first. I know CRT's do not work as even a half decent computer monitor. I am planing on putting a HTPC in the living room and using it more for stream music too my reciver then anything else but I do have a small collection of music vids and other vids of stupid stunts with R/C cars theat I would like to watch on the tv. Could I just get by with svid for this? or what about the adapter you have linked to in some other post, though I would have to save afew bucks for that route. More then anything I just want an "easy" way of outputing a vid signal to the tv for controlling the comp. for music and some vids.

**rbinck** · 02-19-2005, 08:03 PM

If you have s-video output on your video card, that will be the "easiest" way to do what you have described.

Alessandro · 02-22-2005, 11:31 PM

Dear rbinck

I borrowed an ATI CARD, X-800, from a friend of mine, hooked it all up and now, my HDTV works like a dream. Anyhow, I am finding quite difficult to center the image, actually, the image is so big, that I have to minimized my movie player to get a full screen image on it. How can I get to centered the image from the PC on my HDTV? Everyting looks wonderful on the TV (With the exceptin of a little blurr on the right corner, that looks like a little ghost image), but, it is hardly noticable. I want to center the image on the HDTV, because I want to play games on it and see my movies. also, I want to do things on the computer, while my wife sees the movies full screen on the TV. I used to do that before, with my G-Force card, and the S-VHS output. What about now? How can I get? I am using the Video Component output of mthe X-800 Card, hooking it with the 480pX1080i, of my LG-HDTV.

Thanks in advance for the answer,

Alessandro.

RSawdey · 03-06-2005, 11:48 AM

DVI-i is a combination of DVI-a and DVI-d signals on one connector. DVI-a is analog, RGBHV just like VGA... A DVI-i to VGA adaptor picks up the analog signals with a DVI-a plug & rewires them to a VGA connector. DVI-d is the digital part, used by flat panel monitors & TVs.

A significant difference between using ATI and NVidia products for HTPC is that only ATI produces interlaced resolutions. That is not as limiting as it may seem, because progressive resolutions are far preferable for PC displays. A 1080i HDTV can be run in 960 x 540p mode, for example, for a progressive scan desktop.

The owner of the BEAUTIFUL new HLP5685W should know a couple things about using these newest Sammys... First, since you have the HD2+ 720p chipset you should use use a 720p input signal (native res). Second, these newest models from Sammy have a new way of adjusting overscan for PC use that only has about a 2% overscan AND is 1:1 pixel mapped. Check your manual for details on using the PC input setup menu. And congrats on a great set!

Jawad · 03-18-2005, 06:41 PM

my cousin has the 50" Samsung DLP HL-P5063W he got last week.
I brought my computer over to his house because i had lots of HD content on my computer, including Gladiator 1080i and many others such as Smallville HDtv.

Anyways, I have a 6800GT, so i used the DVI cable from my computer to his computer.

Set my nvidia to goto 1280x720, worked like a champ.

However, when watching Smallville HDTV, there would be some tearing in the picture when the camera moved side to side. As if in a video game, and I need to turn on Vsync.

What is the solution to stop the tearing, yet still display a crisp HDTV feed?

SpHeRe31459 · 03-18-2005, 09:53 PM

What application were you using to playback the recordings? Sounds like you are rendering the video in VMR9, the tearing is very much like the 3D game tearing. The main thing to do is make sure the HDTV is set at the primary monitor. This ensures the graphics card will use its' resources to display the video.

Jawad · 03-19-2005, 01:37 AM

well, I could see my whole desktop on the DLP. So I justed opened up the file i wanted to play in VLC media player, and made it full screen...

RSawdey · 03-19-2005, 03:07 PM

Also, kill any unneeded tasks running to give you more decompressing 'horsepower'. You might also avoid the real-time crossconversion from 1080i to 720p by reformating the file to 720p offline, should play back smoother.

Jawad · 03-26-2005, 02:54 PM

my computer has the power to play the hdtv file. I have a 23" LCD 1920x1200 as my normal monitor, so i know.

but when i play it on the DLP, when scene in the movie goes from side to side, you can see tearing, MUCH like in video games when VSYNC isn't enabled.

02-22-2005, 11:31 PM	#39
Alessandro A couch and an HDTV to go please. Join Date: Feb 2005 Posts: 11	Centered image. Dear rbinck I borrowed an ATI CARD, X-800, from a friend of mine, hooked it all up and now, my HDTV works like a dream. Anyhow, I am finding quite difficult to center the image, actually, the image is so big, that I have to minimized my movie player to get a full screen image on it. How can I get to centered the image from the PC on my HDTV? Everyting looks wonderful on the TV (With the exceptin of a little blurr on the right corner, that looks like a little ghost image), but, it is hardly noticable. I want to center the image on the HDTV, because I want to play games on it and see my movies. also, I want to do things on the computer, while my wife sees the movies full screen on the TV. I used to do that before, with my G-Force card, and the S-VHS output. What about now? How can I get? I am using the Video Component output of mthe X-800 Card, hooking it with the 480pX1080i, of my LG-HDTV. Thanks in advance for the answer, Alessandro.

Similar Threads to Connecting DVI to HDTV
Thread	Thread Starter	Forum	Replies	Last Post
BenQ Projector hookup	rbinck	Cables & Connections	8	11-30-2004 10:00 AM
Panasonic Projector	richieboy	Front-Projection (Projector) TVs	7	08-08-2004 06:58 AM

01-18-2005, 01:15 PM	#31
rbinck Administrator Join Date: Apr 2004 Location: Katy, Texas Posts: 12,338	moninfo only works with DVI or HDMI connections where the TV will talk back to the computer via the digital connection. VGA connections are analog and only one direction, out of the computer and into the TV.

01-18-2005, 05:29 PM	#32
wdgang High Definition is the definition of life. Join Date: Nov 2004 Posts: 45	I did use the DVI output on the video card connecting to the TV thru a DVI-component adapter. Maybe I should always connect the VGA output to a PC monitor, other than to the TV's VGA input. Will try that.

01-18-2005, 09:32 PM	#33
rbinck Administrator Join Date: Apr 2004 Location: Katy, Texas Posts: 12,338	Your TV will need to have a DVI connection for moninfo to work.

01-19-2005, 01:41 AM	#34
wdgang High Definition is the definition of life. Join Date: Nov 2004 Posts: 45	No wonder. Unfortunately my TV doesn't have one.

02-19-2005, 01:29 AM	#35
Garawin How can anyone watch standard def? Join Date: Feb 2005 Posts: 20	Hi everone...Ok I have a Samsung TX-2675WH. It has a DVI port and says to use a DVI 25-pin cable, but it does state that it is not compatible with a pc signal. I am willing to try what has been outline in the earlier post. My question is this... I am planing on getting a ATI AIW 9800Pro, if I get the DVI to component converter will I have to worry about resolutions and timings? I don't need "the best" quility pic. I just need a screen for my HTPC . If I get it up and running hooed up like this I can try getting it working over a DVI cable later, I just want an easy hook-up for now.

02-19-2005, 01:22 PM	#36
rbinck Administrator Join Date: Apr 2004 Location: Katy, Texas Posts: 12,338	It states the DVI port is not PC compatable because it is set for a TV signal. That means there will be overscan and you can expect a desktop that the edges are off of the screen. It will be unusable as a computer monitor. The same will be the case going in through the component connections. You can with some work get some of the HDTV resolutions to work, but since it is a CRT unit the only clear resolution will probably be 720 x 480 which will work great for DVDs, but a bit low for computer work. Most CRT based widescreen CRTs will not do better than about 1000 x 600. 4:3 CRTs are limited to about 800 x 600. If you were thinking you could use the TV as your computer monitor, I think you will be disappointed.

02-19-2005, 07:20 PM	#37
Garawin How can anyone watch standard def? Join Date: Feb 2005 Posts: 20	Well I just read afew of the stickies in the forum...should have done that first. I know CRT's do not work as even a half decent computer monitor. I am planing on putting a HTPC in the living room and using it more for stream music too my reciver then anything else but I do have a small collection of music vids and other vids of stupid stunts with R/C cars theat I would like to watch on the tv. Could I just get by with svid for this? or what about the adapter you have linked to in some other post, though I would have to save afew bucks for that route. More then anything I just want an "easy" way of outputing a vid signal to the tv for controlling the comp. for music and some vids.

02-19-2005, 08:03 PM	#38
rbinck Administrator Join Date: Apr 2004 Location: Katy, Texas Posts: 12,338	If you have s-video output on your video card, that will be the "easiest" way to do what you have described.

03-06-2005, 11:48 AM	#40
RSawdey Mr. Wizard Join Date: Feb 2005 Location: Ferndale, Michigan Age: 61 Posts: 5,981	DVI-i is a combination of DVI-a and DVI-d signals on one connector. DVI-a is analog, RGBHV just like VGA... A DVI-i to VGA adaptor picks up the analog signals with a DVI-a plug & rewires them to a VGA connector. DVI-d is the digital part, used by flat panel monitors & TVs. A significant difference between using ATI and NVidia products for HTPC is that only ATI produces interlaced resolutions. That is not as limiting as it may seem, because progressive resolutions are far preferable for PC displays. A 1080i HDTV can be run in 960 x 540p mode, for example, for a progressive scan desktop. The owner of the BEAUTIFUL new HLP5685W should know a couple things about using these newest Sammys... First, since you have the HD2+ 720p chipset you should use use a 720p input signal (native res). Second, these newest models from Sammy have a new way of adjusting overscan for PC use that only has about a 2% overscan AND is 1:1 pixel mapped. Check your manual for details on using the PC input setup menu. And congrats on a great set!

03-18-2005, 06:41 PM	#41
Jawad Molderator Join Date: Feb 2005 Posts: 25	my cousin has the 50" Samsung DLP HL-P5063W he got last week. I brought my computer over to his house because i had lots of HD content on my computer, including Gladiator 1080i and many others such as Smallville HDtv. Anyways, I have a 6800GT, so i used the DVI cable from my computer to his computer. Set my nvidia to goto 1280x720, worked like a champ. However, when watching Smallville HDTV, there would be some tearing in the picture when the camera moved side to side. As if in a video game, and I need to turn on Vsync. What is the solution to stop the tearing, yet still display a crisp HDTV feed?

03-18-2005, 09:53 PM	#42
SpHeRe31459 Can't wait for the switch Join Date: Dec 2004 Location: California, USA Posts: 213	What application were you using to playback the recordings? Sounds like you are rendering the video in VMR9, the tearing is very much like the 3D game tearing. The main thing to do is make sure the HDTV is set at the primary monitor. This ensures the graphics card will use its' resources to display the video.

03-19-2005, 01:37 AM	#43
Jawad Molderator Join Date: Feb 2005 Posts: 25	well, I could see my whole desktop on the DLP. So I justed opened up the file i wanted to play in VLC media player, and made it full screen...

03-19-2005, 03:07 PM	#44
RSawdey Mr. Wizard Join Date: Feb 2005 Location: Ferndale, Michigan Age: 61 Posts: 5,981	Also, kill any unneeded tasks running to give you more decompressing 'horsepower'. You might also avoid the real-time crossconversion from 1080i to 720p by reformating the file to 720p offline, should play back smoother.

03-26-2005, 02:54 PM	#45
Jawad Molderator Join Date: Feb 2005 Posts: 25	my computer has the power to play the hdtv file. I have a 23" LCD 1920x1200 as my normal monitor, so i know. but when i play it on the DLP, when scene in the movie goes from side to side, you can see tearing, MUCH like in video games when VSYNC isn't enabled.