opencv学习记录一

https://www.bilibili.com/video/BV19J411X7YG?p=6

目前已学完第5课

通过opencv可以读取/写入图片和视频

import cv2

# cap=cv2.VideoCapture(r'C:\Users\Earth\Desktop\movie.ogg');

cap=cv2.VideoCapture(0)

# print(cap.isOpened())

fourcc=cv2.VideoWriter_fourcc(*'XVID')

out=cv2.VideoWriter('output.avi',fourcc,20.0,(640,480))

while(cap.isOpened()):

    ret,frame=cap.read()

    if ret==True:

        print(cap.get(cv2.CAP_PROP_FRAME_WIDTH))

        print(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))

        out.write(frame)

        gray=cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)

        cv2.imshow('frame',gray)

        if cv2.waitKey(1)& 0xFF==ord('q'):

            break

    else:

        break

cap.release()

cv2.destroyAllWindows()

代码待整理

P.S.视频博主的咖喱英语听着真难受

 

fourcc是一种视频格式，选择了合适的格式才能保存成视频