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Old 12-08-2010, 07:19 AM   #1799
xitrum
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Join Date: Dec 2010

Posts: 12
Originally posted by Jim Sachs:
I'll try my best to clear up this confusion. Let's say your 3D system really does require a refresh rate of 24 fps to sync with shutter glasses (to say I'm skeptical about this would be an understatement).  
Sorry for the miscommunication. Let's try again.

The HDMI 1.4a spec requires 3D game content to be 720p/60. It happens to require 3D movie content to be 1080p/24Hz. This has nothing to do with syncing with the shutter glasses.

nVidia 3DTV Play takes resolution and frame rate into account when it tries to detect whether the content it is displaying is 3D compatible. If I set the resolution to 1920x1080 and the frame rate at 30. nVidia 3DTV Play says that the format is not 3D compatible and will not output 3D content to the 3DTV. But if I set the resolution to 1920x1080 and the frame rate at 24 or the resolution to 1280x720 and the frame rate at 60, then nVidia 3DTV Play will recognize the content as 3D compatible and will output 3D content to the 3DTV. As of now, I can only use the 720p resolution.

I don't know how you deal with the latency when trying to push data at a certain frame rate. But I guess it's the same as if you allow the user to set the frame rate at 30, 60, etc. There are certain video games that allow me to set fixed frame rate. I've used that feature to play the games in 3D at 1920x1080. So I know this is possible.
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