2015-11-28 11:11:57 -0600 | commented question | cvQueryFrame always return NULL oh thank you,it works,but why?would you please give me some hints or reference? |
2015-11-28 07:42:16 -0600 | asked a question | cvQueryFrame always return NULL sorry for my poor English,but I meet a annoying problem.I use a laptop with win 8.1 system and opencv 3.0. I wrote a small program hoping to show the video captured from the built-in camera, but failed. I figured out that the problem lies in the function cvQueryFrame(), as it always return NULL but the camera is opened. the code is as follow: int main() } |