cv2.VideoCapture不返回帧

我试图用wx按钮保存摄像头视频。这是我的代码cv2.VideoCapture不返回帧

def OnRecord(self, evt): 
    capture = cv2.VideoCapture(0) 
    if (not capture.isOpened()): 
     print "Error" 

    # video recorder 
    fourcc = cv2.cv.CV_FOURCC('D', 'I', 'V', 'X') # cv2.VideoWriter_fourcc() does not exist 
    out = cv2.VideoWriter("output.avi", fourcc, 9.0, (640, 480), True) 

    # record video 
    while (capture.isOpened()): 
     ret, frame = capture.read() 
     if not ret: 
      print "Capture Failed" 
     else: 
      out.write(frame) 
      cv2.imshow('Video', frame)

但它打印Capture Failed，直到我关闭Python Shell中自己。所以，我猜capture.read()不会返回帧。可能是什么原因？

我该如何让它工作？希望对一些专家的意见:)

来源

2016-07-19 SivamNatesan

它打印“错误”的开始？ – Micka

不，我不打印错误只打印'捕获失败' – SivamNatesan

尝试读取捕获为如之前初始化计数器：

i = 0 
while i < 0: 
    ret, frame = capture.read() 
    if ret: 
      out.write(frame) 
    else: 
      print "Error"

来源

2016-07-23 05:55:04

感谢它的工作:) – SivamNatesan

cv2.VideoCapture不返回帧

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