sg4rb0
Posts: 20
Joined: Mon Sep 22, 2014 9:35 pm

1080p 120hz

Thu Mar 03, 2016 7:27 pm

I am thinking of buying a large TV that can run 120hz. My question is, does the Raspberry Pi support [email protected] hz. If so, which models support it?

W. H. Heydt
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Location: Vallejo, CA (US)

Re: 1080p 120hz

Thu Mar 03, 2016 7:36 pm

To the best of my knowledge, no model of Pi would support that. However, the TV almost certainly supports more reasonable frame rates like 1080p60 or 1080p30. Since your optic nerve actually runs at 13Hz, you are unlikely to be able to tell the difference in practice.

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GTR2Fan
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Joined: Sun Feb 23, 2014 9:20 pm
Location: South East UK

Re: 1080p 120hz

Thu Mar 03, 2016 7:39 pm

sg4rb0 wrote:I am thinking of buying a large TV that can run 120hz. My question is, does the Raspberry Pi support [email protected] hz. If so, which models support it?
None of them as far as I know. Out of interest, why do you want this capability? Do you have 1080p120 source material?
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toxibunny
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Joined: Thu Aug 18, 2011 9:21 pm

Re: 1080p 120hz

Thu Mar 03, 2016 8:33 pm

W. H. Heydt wrote:To the best of my knowledge, no model of Pi would support that. However, the TV almost certainly supports more reasonable frame rates like 1080p60 or 1080p30. Since your optic nerve actually runs at 13Hz, you are unlikely to be able to tell the difference in practice.
I can tell the difference between 60fps and 120fps no problem. As can most people, I suspect...

Edit: I'd love to see some 1080p 120fps video. I bet it's like looking through glass.
note: I may or may not know what I'm talking about...

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topguy
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Re: 1080p 120hz

Thu Mar 03, 2016 8:49 pm

There is (AFAIK) no known reason to make a TV that accepts 120fps content. ( I dont consider 3D @ 60fps as 120fps even it the TV actually has to show 120 different frames a second to pull that off. )

120Hz TV's work mainly by creating the extra frames that will be shown between the other frames to give a smoother experience.
(Samsung calls it MotionRate, Sony MotionFlow, LG TruMotion )

The exception I see is if someone makes a TV that also is a 120/144Hz gaming monitor, but then you need DisplayPort and not HDMI I believe.

CroppedBee
Posts: 3
Joined: Sat Sep 16, 2017 4:59 pm

Re: 1080p 120hz

Sat Sep 16, 2017 5:05 pm

W. H. Heydt wrote:
Thu Mar 03, 2016 7:36 pm
To the best of my knowledge, no model of Pi would support that. However, the TV almost certainly supports more reasonable frame rates like 1080p60 or 1080p30. Since your optic nerve actually runs at 13Hz, you are unlikely to be able to tell the difference in practice.
I know this is an old thread, but I came across it after searching about this compatibility issue. I'd like to point out, however, that the above statement about the optic nerve is untrue. In fact, neuronal signals related to 60 Hz refresh rate have been shown to be present in primary visual cortex, which would have been impossible if the optic nerve "ran at 13Hz". Granted, cognitively we do a good job of filtering this out, but a lot of hypotheses have been presented about the impact of such an overwhelming neuronal response to an artifact that is not related to the video content.

The optic nerve, and all nerves, are effectively analog machines. So the impact of high refresh rates still may have a positive impact on viewer experience.

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