[bassballboy]

Do I need to change a setting for the TV to display 120hz for blu-rays?


I have my PC set up to display at 1920x1080 and 24p. When I do that the TV shows that it's displaying at 24hz, do I need to change a setting to make it display 120hz?

 

[jrcorwin]

Why would they play at 120?

 

[turls]

They are playing at 120hz. 120/5 = 24. You're all set.

 

[jrcorwin]



Quote:
Originally Posted by bassballboy /forum/post/15503401


Do I need to change a setting for the TV to display 120hz for blu-rays?


I have my PC set up to display at 1920x1080 and 24p. When I do that the TV shows that it's displaying at 24hz, do I need to change a setting to make it display 120hz?

The only options here are 24Hz, 30Hz, and 60Hz. That is what is accepted by the TV. You need to change the output from you PC depending on the source:


Film (most blu-rays) is at 24Hz and move video (TV episodes) are at 60Hz.


The "120Hz" on DLP's isn't used the same way as it is on an LCD. You see it as an important feature on LCD's and that is only because it's being used to improve fast motion response. DLP's don't have a problem with that. The "120Hz" is used for 3D applications and has something to do with how the image is processed.

 

[jrcorwin]



Quote:
Originally Posted by turls /forum/post/15505326


They are playing at 120hz. 120/5 = 24. You're all set.

I think when he checks the display it's showing "1920x1080 @ 24Hz" and he thought it would say 120Hz.

 

[walford]

If he is using the Info button on his TV remote then his is seing the resolution that the TV is receiving and not how it is being displayed.

AFAIK the HL61A750 has no 120Hz display capability much less 120 Hz with 5:5 pulldown when receiving 1080p/24 input. Therfor all inputs are displayed at 1080p/60 regardless of the resolution that they are received at.

 

[jrcorwin]



Quote:
Originally Posted by walford /forum/post/15509710


If he is using the Info button on his TV remote then his is seing the resolution that the TV is receiving and not how it is being displayed.

AFAIK the HL61A750 has no 120Hz display capability much less 120 Hz with 5:5 pulldown when receiving 1080p/24 input. Therfor all inputs are displayed at 1080p/60 regardless of the resolution that they are received at.

The HL61A750 is capable of 24Hz, 30Hz, and 60Hz.

 

[walford]

That is not surprising however, I could not find that documented in its user manual .

But itr makes sense since if it can accept 1080p/60 that it wouod also accept 1080p/30 or 1080p/24 into qn input processing buffer and then copy each new frame into an output buffer which it then uses to refresh the display 60 times a second.

 

[jrcorwin]



Quote:
Originally Posted by walford /forum/post/15510248


That is not surprising however, I could not find that documented in its user manual .

But itr makes sense since if it can accept 1080p/60 that it wouod also accept 1080p/30 or 1080p/24 into qn input processing buffer and then copy each new frame into an output buffer which it then uses to refresh the display 60 times a second.

What the heck is out there with 30Hz. What uses that?

 

[hdnola]



Quote:
Originally Posted by jrcorwin /forum/post/15510487


What the heck is out there with 30Hz. What uses that?

many tv shows are shot at 30 fps mostly sitcoms and news and sports

 

[bassballboy]

 http://www.hardforum.com/showthread.php?t=1382603


I'm sending it from my ATI video card, see w1retap's post.


If I set it to 24p, is the TV converting it to 120hz, or is it actually displaying at 24hz? It sounds like 120hz (or 240 or anything that reduces blur on LCDs) is irrelevant on DLP's, this correct?

 

[walford]

As I stated before your TV does not support or dislay anything in 120Hz.

Have you tried the TV remote's Info button to see what resolution it says it is receiving?

Also as a stated before a TV that does support 120Hz must also support 5:5 pull down to display hz material without judder since 5:5 pull down will display each of the the 24 frames 5 times during a 120Hz refresh since 5x24=120.

 

[jrcorwin]



Quote:
Originally Posted by bassballboy /forum/post/15518507

http://www.hardforum.com/showthread.php?t=1382603


I'm sending it from my ATI video card, see w1retap's post.


If I set it to 24p, is the TV converting it to 120hz, or is it actually displaying at 24hz? It sounds like 120hz (or 240 or anything that reduces blur on LCDs) is irrelevant on DLP's, this correct?

Regardless...you need to forget about 120Hz. It doesn't matter. You need to play blu-ray and film at 24Hz. You should play video and TV episodes at 60Hz.

 

[walford]

Since film DVDs and film TV programs are encoded at 480i/60 or 1080i/60 you may have problems if you try playing them at 1080p/24.

 

[whateveryo]



Quote:
Originally Posted by bassballboy /forum/post/15503401


Do I need to change a setting for the TV to display 120hz for blu-rays?


I have my PC set up to display at 1920x1080 and 24p. When I do that the TV shows that it's displaying at 24hz, do I need to change a setting to make it display 120hz?

How is your PC with your 24hz settings? I enabled 24hz in my videocard's control panel but there is a lot of overscan and no matter what I do, I cannot adjust it. I tried the 'resize my desktop' option but the settings don't stay. I've read that this is a problem with Nvidia cards (I have the 8800GT) and there is really no solution for it yet. What are you using?


For now I am just outputting 1920x1080 @ 60hz but a lot of the settings in the T.V.'s menu are grayed out whereas they are all accessible when I am outputting 24hz from my computer.

 

[walford]

Whateveryo,

What make/model HDTV do you have?

Have you tried 1080i/60 instead of 1080p/60?

 

[whateveryo]

I have the HL61A750. I actually just fixed my issue...sort of. I had my PC connected to the HDMI/DVI input (HDMI #3 input) on my T.V. and I just switched it to HDMI #2 (which is what I had my Xbox 360 on). Now I can adjust all of the settings in the menu. I still can't adjust the overscan with the 24hz but 1080p @ 60hz is good enough for me. I don't even see any judder anyways.

 

[Low Tech]



Quote:
Originally Posted by walford /forum/post/15524975


Whateveryo,

What make/model HDTV do you have?

Have you tried 1080i/60 instead of 1080p/60?

The guy is playing from the computer... it does not do proper convertion as computers playback at different pulldown.


I recommend a BD player to setup the tv with, and to use 1080i @ 60fps.

 

[walford]

It is not possible to display 24fps content at 60fps and display each of the 24 frames the same number of time so that no judder occurs. You have to display some frames 3 times and some frames 2 times.

That is why a 120Hz display that displays each and every frame from 24fps content 5 times has no judder.