As you might have already noticed, the internal’s opencv camera interface is far from complete. You can capture video from your camera without a hassle but you’re very limited to what you can do.
For instance, let’s say you have a webcam that can run at HD resolution ( 1280 x 720 px ), you can use the opencv’s class cv::VideoCapture to get the frames but you’re going to have a hard time on getting the full resolution out of your device.
To sort out this problem, one could use specialized libraries. The disadvantage : they’re not usually multi platform so you’ll find yourself writing classes for every platform where you’re camera device operates.
Theo developed a very useful video capture library for windows called videoInput.
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