首先ubuntu下用pip安装opencv-python

截取视频每一帧保存为图片

代码如下：

import cv2  

# load video from your path
vc = cv2.VideoCapture('./video/20180327_IMG_1225.avi') 
c = 0
rval=vc.isOpened()  

while rval:    
    c = c + 1  
    rval, frame = vc.read()  
    if rval:  
        cv2.imwrite('./picture/7/output-'+str(c) + '.jpg', frame) 
    else:  
        break  

vc.release()  

这样解析出来每帧之间差别不大，如果想隔一个固定的帧数间隔进行截取，可以看下面的代码。下面的代码对多个视频进行批处理，按每10帧截1帧的方式解析视频：

import cv2 
import os

for i in range(1,10):
    # picture save path
    path = '/home/ogai/cvtest/picture/pic/'+str(i)+'/'
    if not os.path.exists(path):
        os.mkdir(path)
    # load video from video path
    vc = cv2.VideoCapture('/home/ogai/cvtest/video/wu/WeChatSight'+str(i)+'