I'm very very new to Linux and programming! I'm using ubuntu 11.10 - 64 bits with gcc 4.6.1 I've been searching online for an example C++ code that simply grabs video from a compliant UVC webcam and displays it simultaneously.. I need to compile it on gcc. In OpenCV, it's a very simple code less than 20 lines as I remember! I found this: http://v4l2spec.bytesex.org/spec/capture-example.html But it's very huge code relative to OpenCV code ?! and even when I tried to compile it using gcc.. I got many errors! I copied the code into a cpp file: cap.cpp then wrote in the terminal: gcc cap.cpp -o cap and the errors showed up... same errors with g++ I hope if someone can help me and tell me where can I find another simpler code? and how can I test it ? Thank you :)