#coding=utf-8

import numpy as np

import cv2

cap = cv2.VideoCapture('man.avi')

while(cap.isOpened()):

    # 从摄像头读取一帧，ret是表明成功与否

    ret, frame = cap.read()

    if ret:

        #处理得到的帧，这里将其翻转

        frame = cv2.flip(frame,0)

        cv2.imshow('frame',frame)

    else:

        break

    # 监听键盘，按下q键退出

    if cv2.waitKey(25) & 0xFF == ord('q'):

        break

##释放

cap.release()

cv2.destroyAllWindows()

OpenCV Error: Assertion failed (size.width>0 && size.height>0) in cv::imshow, file C:\build\master_winpack-bindings-win32-vc14-static\opencv\modules\highgui\src\window.cpp, line 325

Traceback (most recent call last):

  File "C:/PycharmProjects11/day5 ����/2 MOG2��ϸ�˹ģ��.py", line 18, in <module>

    cv2.imshow('frame',fgmask)

cv2.error: C:\build\master_winpack-bindings-win32-vc14-static\opencv\modules\highgui\src\window.cpp:325: error: (-215) size.width>0 && size.height>0 in function cv::imshow

#-*- coding:utf-8 -*-

import cv2

import numpy as np

from matplotlib import pyplot as plt

#1.读入avi对象

cap = cv2.VideoCapture('C:\\PycharmProjects11\\video\\people.avi')

#2.视频有多少秒

fps = cap.get(cv2.CAP_PROP_FPS)

print fps

#3.视频的width，height

size = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)),

        int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))

print size