Revision history [back]

You can use a counter variable, for example int counter2 = 0;. Inside the while loop, use this if condition:

if(counter2 % 10 == 0)
{
    cap >> frame;
}
else
{
    counter2++;
    continue;
}

Notice that this will extract a frame every 10, it will not convert your video to 10fps.

Hope this helps.