3、 How to read video?

One 、 How to read video ？

Example ：pandas Is based on NumPy A tool of , The tool is created to solve data analysis tasks .

Two 、 Use steps

1. Import and stock in

The code is as follows （ Example ）：

import cv2
cap=cv2.VideoCapture(r"C:\Users\liewei\Desktop\pic\1.mp4")
while(1):
    ret,frame=cap.read()
    gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    cv2.imshow("cap",frame)
    if cv2.waitKey(27)&0xFF==ord('q'):#a Press q Pause 
        break
cap.release()
cv2.destroyAllWindows()