Nvidia Geforece 9400 and Panasonic vt50 - 24P playback - AVS Forum
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post #1 of 5 Old 08-04-2012, 08:52 PM - Thread Starter
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So i have GIGABYTE GA-E7AUM-DS2H LGA 775 NVIDIA GeForce 9400 HDMI Micro ATX Intel Motherboard.
I installed latest drivers and I am trying to set it up for the best viewing experience with my panasonic 50vt.
I created custom resolution like this:

active pixels horizontal: 1920 vertical: 1080
front porch horizontal: 638 vertical: 4
sync width horizontal: 44 vertical: 5
total pixels horizontal: 2750 vertical: 1125
polarity horizontal: positive vertical: positive
refresh rate: 23.978

The tv took it and i set it to do 96hz for 24P direct.

Is above the best way to set it up?
Is 23.978 what Panasonic actually likes as input?

thx
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post #2 of 5 Old 08-04-2012, 10:55 PM
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Originally Posted by blwegrzyn View Post

So i have GIGABYTE GA-E7AUM-DS2H LGA 775 NVIDIA GeForce 9400 HDMI Micro ATX Intel Motherboard.
I installed latest drivers and I am trying to set it up for the best viewing experience with my panasonic 50vt.
I created custom resolution like this:
active pixels horizontal: 1920 vertical: 1080
front porch horizontal: 638 vertical: 4
sync width horizontal: 44 vertical: 5
total pixels horizontal: 2750 vertical: 1125
polarity horizontal: positive vertical: positive
refresh rate: 23.978
The tv took it and i set it to do 96hz for 24P direct.
Is above the best way to set it up?
Is 23.978 what Panasonic actually likes as input?
thx

The TV will accept any signal to a certain point before it loses it completely. With nvidia custom resolutions you can make it do 23.974, 23.977 etc, it's just getting it to do 23.976 properly is where it falls short. Ati is as close as you can get without having to fiddle with custom resolutions it just does 23.976 by default.
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post #3 of 5 Old 08-05-2012, 08:17 AM - Thread Starter
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Sorry i meant 23.796, but i noticed that after creating custom resolution of 23.796 it defaults to 24hz after saving it.
I wonder if 24p is as good as 23.796 as for the input signal for panasonic?
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post #4 of 5 Old 08-05-2012, 08:35 AM
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Originally Posted by blwegrzyn View Post

Sorry i meant 23.796, but i noticed that after creating custom resolution of 23.796 it defaults to 24hz after saving it.
I wonder if 24p is as good as 23.796 as for the input signal for panasonic?

Try just setting the refresh rate to 23Hz in the custom panel without fiddling with bp/fp and see what you get. Test the 24Hz default option also. 23.769 will get you a ton of dropped frames audio sync may also be affected.
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post #5 of 5 Old 08-06-2012, 07:18 AM - Thread Starter
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panasonic accepts:
Input signal Horizontal frequency (kHz) Vertical frequency (Hz)
1,125 (1,080)/24p * 26.97 23.98
1,125 (1,080)/24p * 27.00 24.00

i wonder which is the proper signal that should be sent to tv to give best video quality with no stutter?
Is there a way to test if input signal is the way it should be?
I always though that 24P would be the best as it is native resolution for the tv, but i am noticing stutter with it?
I dont have anything against motion like feel with little flicker but stutter bothers me.

edit:
another question i have is that while i watch obc Olympics on you tube i believe that the frame rate is 30fps?
So depending how i output it must be converted to either:
30.00 fps to 23.976 fps: 0.799
30.00 fps to 24.00 fps: 0.800

or it will simply translate to whatever my card outputs to tv which is 23hz ( 23.971 not 23.976)
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