[KoNcEpTzOfLiFe]

Hello!

I recently bought the 2007/2008 Vizio XVT series 120 Hz 47 inch display and am using it as my monitor for my PC. When playing matroska files on my PC with this display @ 120 Hz, it looks great every few seconds or so and then starts to judder/lag/stutter. This cycle repeats itself with the picture looking fluid, then lagging, fluid, then lagging. I fiddled with all my TV/PC settings and had researched the solution to this issue, but I have no luck thus far. The only setting that helps 120 Hz playback with less juddering turning on deinterlacing to "Blend" mode using VLC player. Other than that, is there a solution to this issue? And if so, what can I do to fix it?


Any feedback would be greatly appreciated. Thank you!



PC Specifications:

Q6600 @ 3.60 GHz

4 GB PC2-6400 RAM

XFX NVIDIA 9800 GTX

750W Coolermaster PSU

XFX 680i SLI Motherboard

 

[Benny42]



Quote:
Originally Posted by KoNcEpTzOfLiFe /forum/post/16879495


Hello!

I recently bought the 2007/2008 Vizio XVT series 120 Hz 47 inch display and am using it as my monitor for my PC. When playing matroska files on my PC with this display @ 120 Hz, it looks great every few seconds or so and then starts to judder/lag/stutter. This cycle repeats itself with the picture looking fluid, then lagging, fluid, then lagging. I fiddled with all my TV/PC settings and had researched the solution to this issue, but I have no luck thus far. The only setting that helps 120 Hz playback with less juddering turning on deinterlacing to "Blend" mode using VLC player. Other than that, is there a solution to this issue? And if so, what can I do to fix it?


Any feedback would be greatly appreciated. Thank you!



PC Specifications:

Q6600 @ 3.60 GHz

4 GB PC2-6400 RAM

XFX NVIDIA 9800 GTX

750W Coolermaster PSU

XFX 680i SLI Motherboard

Your PC should be powerful enough for fluid playback.


Does the Vizio really accept a 120 Hz framerate or do you just supply it the usual 60 Hz and the set pushes this to 120?


Does this happen only with interlaced video?

Did you try a different player like Media Player Classic? (Newest version = v1.2.908.0)

What programs do run in the background? Something interrupting every few seconds?


bye

Benny42

 

[TomBonge]

I have seen this before with HTPC with 120hz frame creation turned on. Your video player on the PC is taking the 24hz source and applying 3:2 pull down to match the 60hz it is outputting. There is a slight error (telecine judder) that most people don't notice with 3:2 pulldown. Your 120hz mode is creating frames based on that error making it worse. Only use the 120hz frame creation when you give the display the original source at 24hz. Try to set your PC to 24hz output or turn off 120hz frame creation mode.

 

[KoNcEpTzOfLiFe]



Quote:
Originally Posted by Benny42 /forum/post/16879906


Your PC should be powerful enough for fluid playback.


Does the Vizio really accept a 120 Hz framerate or do you just supply it the usual 60 Hz and the set pushes this to 120?


Does this happen only with interlaced video?

Did you try a different player like Media Player Classic? (Newest version = v1.2.908.0)

What programs do run in the background? Something interrupting every few seconds?


bye

Benny42

My computer in the NVIDIA control panel is set @ 60 Hz and supplying it to the set which pushes it to 120. It happens with any video feeding through my PC, including videos on YouTube, .avi videos, and .mkv videos. I tried all types of media players inclduing VLC, Zoom player, Media Player Classic, and Windows Media Player 11. All players play the movies play with the stuttering at the same intervals within the movie.

I have tested to see if it was due to any background applications by turning them all off, but the factor of multitasking does not hinder playback at all (or at least not to a significant extent).

 

[KoNcEpTzOfLiFe]



Quote:
Originally Posted by TomBonge /forum/post/16882759


I have seen this before with HTPC with 120hz frame creation turned on. Your video player on the PC is taking the 24hz source and applying 3:2 pull down to match the 60hz it is outputting. There is a slight error (telecine judder) that most people don't notice with 3:2 pulldown. Your 120hz mode is creating frames based on that error making it worse. Only use the 120hz frame creation when you give the display the original source at 24hz. Try to set your PC to 24hz output or turn off 120hz frame creation mode.

I believe that you're correct. I need a 5:5 pulldown in order to match the 24 FPS/Hz times five in order to produce smooth during playback. I currently do not know how to set my PC to 24 Hz output, and when I do turn off 120 Hz frame creation mode, I cannot reap the benefits of the technology at all. Is there any way to set my HTPC to 24 Hz output using an application or any other tweaks that can fix this issue?


Thank you!


EDIT: I have my video card set @ 60 Hz to feed the HDTV which turns it in 120 Hz for smooth playback. In NVIDIA control panel, it gives me options to set the amount of Hz only @ 25, 30, 40, 59, and 60. Setting it at 25 Hz eliminates the smooth playback for my set. 60 Hz is able to produce the smooth playback for my set, but of course, has the lag that I have been questioning about. I hope this could serve as a hint to the solution.

Thanks again!

 

[TomBonge]

I have a Nvidia 8800 GT and it has the option to run at 24hz, but it only shows up when it is set to 1920x1080 and connected via HDMI. If the option for 24hz does not show up, get Powerstrip to read the EDID data from your set, it will have all the supported modes, look for one that is 1920x1080 at 24hz and enter all the corresponding values into the nvidia control panel under the section to create a custom TV display mode.

 

[KoNcEpTzOfLiFe]



Quote:
Originally Posted by TomBonge /forum/post/16886413


I have a Nvidia 8800 GT and it has the option to run at 24hz, but it only shows up when it is set to 1920x1080 and connected via HDMI. If the option for 24hz does not show up, get Powerstrip to read the EDID data from your set, it will have all the supported modes, look for one that is 1920x1080 at 24hz and enter all the corresponding values into the nvidia control panel under the section to create a custom TV display mode.

I tried doing this, but as you can see in the picture (below) I'm still not given the option. Could it be that my set isn't willing to take a 24 Hz output from my computer?