3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Making Better Quality Stereo 3D PNS Screenshots with 3D Vision

April 24th, 2011 · 5 Comments · GeForce 3D Vision


If you have a system equipped with 3D Vision by using the key combination “ALT + F1” you can take stereoscopic 3D screenshots that you can share online or just store for viewing later on. The screenshots are saved by default in JPS file format which is practically a JPEG image file with both the left and right views saved in Side by Side format. The 3D screenshots get saved under your User account in the Documents folder in a specially named “NVStereoscopic3D.IMG” folder having the name of the executable file and a two digit number after that. The problem here is that by default the quality of the saved screenshots is not very good, however there is a solution, you can improve the quality by following this guide. Another issue with the default 3D screenshot functionality is the fact that you are limited to saving up to 99 screenshots per application, and then you need to move them in another folder and continue saving new screenshot. But there is another thing you can do…



Instead of saving screenshots in JPS format (Side by Side JPEG), you can save them in much better quality in PNS format (Side by Side PNG) and in order to do that you just need to add one new value in the registry. Just make a new DWORD value called StereoImageType and set it to 1 in the following location, depending on your OS type.

For 32-bit Windows:
[HKEY_LOCAL_MACHINE\SOFTWARE\NVIDIA Corporation\Global\Stereo3D]

For 64-bit Windows:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\NVIDIA Corporation\Global\Stereo3D]

This will activate the PNS screenshot functionality instead of the used by default JPS format, and in order to bring back the default JPS screenshots you just need to set the value to 0 instead of 1 or just to delete what you’ve created from the registry. The PNS 3D screenshots are always saved in maximum quality and they may get quite big in size, but this way you get perfect quality that you can further compress and convert in order to get smaller file size should you need to. Another important thing regarding the use of PNS format for the 3D screenshots you save is the ability to take up to 999 instead of 99 screenshots per application.

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How to take in-game 3D Stereo screenshots in JPS format

June 20th, 2009 · 3 Comments · GeForce 3D Vision

While you are playing a game or using a 3D program compatible with GeForce 3D Vision you can take screenshots in JPS format that can be viewed later on in a 3D form instead of the normal “flat” 2D screenshots that can be saved on JPEG format. If you press the Print Screen button or use a program like FRAPS to take in-game screenshots when using GeForce 3D Vision you’ll notice that only normal (single frame) images are being saved. But if you press ALT + F1 instead while in the game you can save a JPS screenshot that actually contains 2 images – one for the left eye and one for the right, thus allowing you to see the image in 3D Stereo mode with a compatible viewer. The 3D screenshots are being saved in a folder called NVStereoscopic3D.IMG in your current user’s My Documents folder. The only drawback when taking 3D Stereo screenshots is that it takes some time, when you press the key combination to save a JPS file you may have to wait for a second until it is ready…


3dstereo-viewer


By default when you install the GeForce 3D Vision drivers you also get the Nvidia 3D Vision Photo Viewer that is needed in order for you to be able to open JPS files and view them in 3D Stereo mode. When you open an image in full screen it is shown in 3D mode, and when you exit the full screen mode it gets in a side by side view of the two frames (the ones for the left and for the right eye). You should have in mind that when viewing the 3D stereo images you cannot change their level of depth like you can in a normal 3D application… when making the screenshots they are being saved in the depth level you were using in the actual game or other 3D application.

Here are some screenshots form the Nvidia’s Medusa 3D Stereo demo
And here is the Nvidia’s Medusa 3D Stereo demo itself that you can download and run

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