python - 检测视频文件中的人脸

Question

我的代码是检测视频中的人脸，但即使我给出了正确的路径，视频也没有被加载。另外，我安装了 ffmpeg，但里面没有 .dll 文件。

任何人都可以帮忙吗？

import cv2

import numpy as np

faceDetect=cv2.CascadeClassifier('C:\\OPENCV\\opencv\\sources\\data\\haarcascades\\haarcascade_frontalface_default.xml')

ret,cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')

img=cam.read()

while(cam.isOpened()):

ret,img=cam.read();

if not ret: break

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

 faces=faceDetect.detectMultiScale(gray,1.3,5);

    `enter code here`for (x,y,w,h) in faces:
        cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2)
    cv2.imshow("Face",img);
    if(cv2.waitKey(1) & 0xFF==ord('q')):
        break;

cam.release()
cv2.destroyAllWindows()

错误:

Traceback (most recent call last):
  File "D:\New folder (5)\New folder (3)\facedet.py", line 5, in <module>
    ret,cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')
TypeError: 'cv2.VideoCapture' object is not iterable

Answer 1

尝试改变:

ret,cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')

img=cam.read()

至:

cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')

ret,img=cam.read()