我同意 Mark Serchell 的评论。我使用的方法是将变量设置为时间+ x秒并检查。 OpenCV具有用于滑动帧的有用功能，例如 cam.grab（）。它只会从缓冲区中读取该帧，但不会对其执行任何操作。这样你就可以避免遭受缓冲。简单的代码是：

I agree with Mark Serchell's comment. The way I am using is to set variable to time + x seconds and check. OpenCV have useful feature for skiping frames like cam.grab(). It will just read that frame from buffer but will not do anything with it. In that way you can avoid "suffering from buffering". Simple code would be:

import cv2
import time
cam = cv2.VideoCapture(url)
ret,frame = cam.read()
timeCheck = time.time()
future = 10*60 # delay
while ret:
    if time.time() >= timeCheck:
        ret,frame = cam.read()
        # Do your staff here
        timeCheck = time.time()+future
    else:
        # Read from buffer, but skip it
        ret = cam.grab() # note that grab() function returnt only status code,not the frame