Computer LCD and a TV LCD'S

[illegal error]

Any one know the difference between a computer LCD and a TV LCD

Just wondering because when i pop a dvd in it looks like crap
when playing games they look wonderful


thanks!!

 

[YOyoYOhowsDAjello]

Originally posted by: illegal error
Any one know the difference between a computer LCD and a TV LCD

Just wondering because when i pop a dvd in it looks like crap
when playing games they look wonderful


thanks!!

It's mostly a resolution difference for an overall difference.

A 20" LCD monitor would tend to have 1600x1200 res while a 20" LCD TV will tend to have a res of 640x480 or 800x600.
There are also different scaling issues associated with that.

Beyond that, the differences are going to be specific to models (response time, black levels, contrast, etc.)

What specifically looks bad on which type of display?

 

[illegal error]

i have a computer lcd


it has DVI-D w/ HDCP


may be i need to get a new V card with dvi


I'm using vga right now

 

[YOyoYOhowsDAjello]

What was wrong with the picture?

 

[illegal error]

it's mostly grainy

 

[z42]

The difference is that LCD TVs are specifically designed to playback movies and have hardware/software optimized for that. They tend to have lower resolutions to match video signals.

Monitors are designed to be multipurpose, so you give up the quality of a "specialized" product.

 

[mikeford]

TV "legally" means it has a tuner, and generally is targeted for watching TV, but there is no inherent other difference. Video oriented non computer resolutions are common, but TV implies nothing really about what the resolution is.

I have a Gateway FPD1975W 19" widescreen LCD plugged into my cable DVR box using a HDMI/DVI cable to watch TV, works fine, just kinda small. Its 1440x900 which means nada.

LCD is a pixel mapped display, what you need to do is setup the video to exactly match the native resolution of the display, and yes a video card with DVI should look better, but its mostly the display remapping whatever resolution you are sending it to fit on the pixels it has.

 

[Slammy1]

Definitely sounds like a scaling issue. What are you using for playback?

Yeah, my one friend got outright irate when I explained that the 32" LCD she was looking at was a monitor, not a television.

 

[illegal error]

I'm using WinDVD 7


I understand now



thanks

 

[Slammy1]

I think a lot of consumer level players are sub-par, but WinDVD still shoudn't give horrible results. I'm guessing the really bad displays are interlaced materials (like TV programs that came out on DVD). In the software there should be an option to set the deinterlacing mode, try setting to force bob and see if that helps out. If you can mess with the filters some, force weave is preferred but is too much for CPUs to handle and can cause an effect of macro blocking in playback (where a group of pixels will change in the same way, producing a grainy effect). Without doing a lot of tweaking, your best bet is to use the native player for your video card so you can set things like deinterlacing on a system basis.

 

[illegal error]

O.K Slammy1 I will try that.



Slammy1 have you ever notice that burned dvd's play bad " when shrinking dvd you can relly tell on a lcd

 

[Slammy1]

Yeah, I was wondering about your sources after I'd posted. It's a fairly involved process taking a DVD to a large display, certainly very succeptable to any small error. The software you use to compress the DVDs is really important, if you have the option you might consider multidisk spanning which would be very close to the source. When people talk about media servers what they do is rip the DVDs to HDD to eliminate the compression issues. You should look into some more advanced playback (like ZoomPlayer, DScaler5, ffdshow). You can minimize some of the artifacting caused by the compression by playing with the filters, though it'll never be as good as the original (but comparable to a very expensive player). If you have an NVidia card I would recommend their decoder over DScaler5, thoughh it is around $50 to purchase it. All the software I listed is free, but ZPlayer will make you jusmp through hoops until you purchase the license ($25 iirc). Here's a thread on how to set it up, though there will be some tweaking to your specific setup.

ffdshow setup

 

[illegal error]

o k thanks dud


Oh"I also notice that old dvd's play bad to like Star wars 1,,

I put in the real copy of blade 2 Man that Sh@t looks good


I guess that why tv dvd players have "upconvert " progressive scan" blue ray



ok thank man

 

[Slammy1]

That's normal, but with upconversion and the right filtering it will look good. I know a lot of people with STBs that think there are only a handful of DVDs that look good on larger displays, to me they almost all look good (some better than others). Now that IS a scaling issue, when you upconvert then scale to your display (usually you'll convert to a higher resolution than your display, if possible) it makes a huge difference. I mean, you take an image at 720x480 and scale it to 1920x1080 the pixels gotta come from somewhere (not the pixel fairy), having a good control of how it adds the missing pixels to the images is the key to good image quality. Like I said, running the hardware decoders for the newer cards is pretty good as well, though not as good; but computers in general are better than all but the very best STBs (even those are dumbed down PCs) assuming some level of hardware, it's the allure of HTPC to me.