Ah...I see now...extending means that both montors are your desktop, and both run at their own resolution, but can be used independently, in a sense. You can just drag the video to the projector (second display) and run it full screen (maximize to full 1920x1080 on projector, but not on the laptop). So the movie plays on the projector and the laptops screen will show whatever is on that desktop part of the desktop. Just don't have a window lapping across the two displays or it will show on the projected image. Think of your desktop being made of two rectangular areas of pixels like 1024x768 (on the left) and then 1920x1080 (on the right). When you drag a window say from left to right, it moves across from the 1024x768 group of pixels into the 1920x1080 group of pixels. The Windows is smart enough to know that each group of pixels is actually a monitor, so you get the option of running full screen windows in either group of pixels, in addition to stretching windows across both groups. It gets wonky when the two rectangular areas have different vertical dimensions, though. I do this all the time for presentations, but not really for movies.

On 8/20/2012 8:44 AM, Thane Sherrington wrote:
At 08:30 PM 15/08/2012, Winterlight wrote:

It is <cloning> but I thought <extending> meant to make one long display instead of two distinct displays.

Yeah, you don't want cloning. I do the same thing with my projector and Acer laptop, and I need to extend if I want full 1080p on the projector.

T



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