opencv4.0 读取保存摄像头数据

读取保存摄像头数据

import cv2

#读取每一帧
cap = cv2.VideoCapture(0)
#cap大小
sz = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)),
        int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))
#fps 
fps = 33
#视频类型
fourcc = cv2.VideoWriter_fourcc(*'mpeg')
#输出
out = cv2.VideoWriter()
out.open('ali.mp4',fourcc,fps,sz,True)

while True:
    ret ,frame = cap.read()
    frame = cv2.flip(frame,1)#翻转 0:上下颠倒 大于0水平颠倒   小于180旋转

    out.write(frame)#写人到out   就是到ali.mp4
    cv2.imshow('aaa',frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

#释放帧
cap.release()
out.release()
cv2.destroyAllWindows()