USB camera grab dimension

[Oldi]

I have "chat" USB camera with resolution 640 x 480, but IMAQdxSnap or IMAQStartAquasition.vi grab image 1280 x 960 pixel. How to change grab size to native size.

I have LV and Vision 2010

[stevem181 · Accepted solution]

I'm using 2009 but this should work the same for you.

Open Measurement & Automation Explorer (MAX) and select your USB camera under: Devices and Interfaces -> NI-IMAQdx Devices.

Select the Acquisition Attributes tab.

Select the Video Mode that you want (640x480) from the drop down menu.

Click on the Save icon at the top of the window.

Now run your application.

[Oldi]

Thanks it's OK now. But driver hawe the same limitation as unofficial - only 1 USB camera can be "open". :mansad: