当我尝试运行此代码时:
import cv2
import vlc
cam = cv2.VideoCapture(0)
m = vlc.MediaPlayer('D:\faith-42201.mp3')
fd = cv2.CascadeClassifier(r'C:\Users\Shivani Khare\AppData\Local\Programs\Python\Python37-32\Lib\site-packages\cv2\data\haarcascade_frontalface_alt.xml')
m.play()
flag=1
m.audio_set_volume(100)
while(True):
r,i = cam.read()
#i[0:10,:,:]=255
#for adding rows
j = cv2.cvtColor(i,cv2.COLOR_BGR2GRAY)
face = fd.detectMultiScale(j,1.3,7)
for (x,y,w,h) in face:
cv2.rectangle(i,(x,y),(x+w,y+h),(0,0,0),-1)
t = w*h
m.audio_set_volume(100-int(t/500))
l = len(face)
if(l>0):
m.play()
flag = 0
elif(flag==0):
m.pause()
flag = 1
print("no of faces are : ",len(face),face)
cv2.imshow('image1',i)
k = cv2.waitKey(5)
print(k)
if(k==27):
cv2.destroyAllWindows()
break
我不断收到此错误:
回溯(最近通话最近一次):
文件“ C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ hi.py”,第5行,在 m = vlc.MediaPlayer('D:\ faith-42201.mp3') 新建中的文件“ C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ vlc.py”,第3184行 o.set_media(instance.media_new(* args)) 在Media_new中的文件“ C:\ Users \ Shivani Khare \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ vlc.py”,行1788 m._instance =自我 AttributeError:'NoneType'对象没有属性'_instance'
请帮助
答案 0 :(得分:0)
您要在第5行的MediaPlayer构造函数中传递一个列表,但它需要一个字符串(参考:https://linuxconfig.org/how-to-play-audio-with-vlc-in-python)。
尝试进行此更改:
m = vlc.MediaPlayer('D:\faith-42201.mp3')