Join Date: Jun 2010
Location: Montpellier, France
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When using Youtube in side by side mode, the TV will never detect that the picture is 3D due to the fact that youtube uses a 2D video mode for sending the picture to the display. It's a normal behaviour, you are supposed to turn 3D on and off manually from your TV remote.
The picture problem you have may be caused by over-scan protection (your PC scales the picture down with a black surrounding frame). When combining over-scan and side by side 3D it would produce a picture that looks like what your are showing in your screenshot, although I am surprised that your picture shows that much of it without you noticing there is a 2D black frame problem to start with. Did you zoom on the picture to make this picture ?
Just in case it were this problem, you can check in your graphics card drivers. There should be an option somewhere to set the over-scan setting, you should set it to 0% or no over-scan so that your computer can send the picture directly to the TV in full-frame.
There is in theory a way to run Youtube 3D with automatic detection however I haven't tested it. It involves youtube html 5 3D output mode and the Nvidia 3D Vision / 3DTV play driver and is only supported by some web browsers, As far as I know it doesn't work yet with the AMD drivers and I do not know if someone if working on it. I am not the most up to date person on this system so if you have an Nvidia graphics card, it would be better if you checked the Nvidia website and Nvidia user forums for more information about this feature.
Also, since your TV uses FPR to create polarised 3D, you can output directly the interlaced 3D pattern your TV uses. Youtube 3D does support this mode too, so your can try it out by choosing the interlaced mode in youtube 3D options. In order to use this mode, you'll need to set your desktop resolution at the exact native resolution of your TV (1920x1080) and make sure you have no over-scan so that the pixels sent by youtube match perfectly the lines of your TV.
Also you have to know that youtube doesn't know exactly at which pixels the video windows is located, so if you mode your picture around you may have to use the "swap eyes" option in youtube 3D to get the eye views in the correct order.