# -*- coding: utf-8 -*-
"""
Created on Tue Dec 30 06:43:36 2014

@author: aaron
"""

import cv2

cv2.namedWindow('Video')

capture = cv2.VideoCapture(0)
_, frame = capture.read()
while frame is not None:
    cv2.imshow('Video', frame)

    key = cv2.waitKey(10)
    if key == ord('s'):     # 当按下"s"键时，将保存当前画面
        cv2.imwrite('screenshot.bmp', frame)
    elif key == ord('q'):   # 当按下"q"键时，将退出循环
        cv2.destroyWindow('Video')
        break
    _, frame = capture.read()

cv2.destroyWindow('Video')