输入视频按制定帧数提取图片

 包含模块：cv2，os

# ！/usr/bin/env python
# -*-coding:utf-8-*-
import cv2
import os

# 要提取的视频路径
video_path = 'path'

times = 0
name = 1   # 第一张图片的编号

# 提取视频的频率，每x帧提取一个
frameFrequency = 30

# 输出图片到当前目录vedio文件夹下
outPutDirName='D:/Image'+ '/'

if not os.path.exists(outPutDirName):
    # 如果文件目录不存在则创建目录
    os.makedirs(outPutDirName)

camera = cv2.VideoCapture(video_path)

while True:
    times+=1
    res, image = camera.read()
    if not res:
        print('not res , not image')
        break
    if times%frameFrequency == 0:
        cv2.imwrite(outPutDirName + 'img_'+ str(name)+ '.jpg', image)
        print(outPutDirName + 'img_' + str(name)+'.jpg')
        name += 1

print('图片提取结束')
camera.release()