Hello, the video source must be listed in VideoSourceList list. If you find it, you can select it the index in VideoSource property. With this interface (VFW) could be necessary to use the driver dialog to select another source from the same capture device (this doesn't happen with DirectShow interface).
I have two exactly the same cameras and I am using WIA. The videosourcelist only has one entry, basically the driver device for them both.
I have tried using ConnectTo then ShowVideo = True but that pops up the dialog box which gives me the option to select which one of the cameras to use. I would like to be able to select the camera I want to use without having that dialog box popping up.
Are you saying that if I use DirectShow then I would be able to do it? Does DirectShow use the WIA interface driver or do I need to install the Twain for that?
I have tested it with DirectShow and it works perfectly. I used one of the Directshow demos under the capture folder to get an idea on how it works. Interesting is the way that it uses ImageEnView and not ImageEnVideoView.
By the way... I tested it without installing any drivers for the cameras and it worked great. I am not sure whether it uses the WIA interface or a generic WDM driver. I did however install the drivers later on and that also worked perfectly.
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WIA Select from multi video devices no dialog
Posted - Feb 13 2012 : 10:28:18
