Opencv python

[tarothp]

读取电脑摄像头，在桌面显示并保存视频在本地。能显示，但是保存只能保存一帧，求指教

import cv2;
clicked=False;
def onMouse(event,x,y,flags,param):
    global clicked;
    if event==cv2.EVENT_LBUTTONUP:
        clicked=True;
cameraCapture=cv2.VideoCapture(0);
cv2.namedWindow("my_window");
cv2.setMouseCallback("my_window",onMouse);
print ("Showing camera feed.Click window or press any key to stop.");
success,frame=cameraCapture.read();
while success and cv2.waitKey(1)==-1 and not clicked:
    cv2.imshow("my_window",frame);
    success,frame=cameraCapture.read();
    fps=30;
    size=(int(cameraCapture.get(cv2.CAP_PROP_FRAME_WIDTH)),int(cameraCapture.get(cv2.CAP_PROP_FRAME_HEIGHT)));
    videoWrite=cv2.VideoWriter('my_window.avi',cv2.VideoWriter_fourcc('I','4','2','0'),fps,size);
    videoWrite.write(frame);
    success,frame=cameraCapture.read();
cv2.destroyAllWindows();
cameraCapture.release();