python tools实现视频的每一帧提取并保存

$ffmpeg -i ffmpeg_test.avi frames_%03d.jpg -hide_banner

#! encoding: UTF-8

import os

import cv2
import cv

videos_src_path = '/home/ou-lc/chenxp/Downloads/Youtube/youtube_select'
videos_save_path = '/home/ou-lc/chenxp/Downloads/Youtube/youtube_frames'

videos = os.listdir(videos_src_path)
videos = filter(lambda x: x.endswith('avi'), videos)

for each_video in videos:
 print each_video

 # get the name of each video, and make the directory to save frames
 each_video_name, _ = each_video.split('.')
 os.mkdir(videos_save_path + '/' + each_video_name) 

 each_video_save_full_path = os.path.join(videos_save_path, each_video_name) + '/'

 # get the full path of each video, which will open the video tp extract frames
 each_video_full_path = os.path.join(videos_src_path, each_video)

 cap = cv2.VideoCapture(each_video_full_path)
 frame_count = 1
 success = True
 while(success):
 success, frame = cap.read()
 print 'Read a new frame: ', success

 params = []
 params.append(cv.CV_IMWRITE_PXM_BINARY)
 params.append(1)
 cv2.imwrite(each_video_save_full_path + each_video_name + "_%d.ppm" % frame_count, frame, params)

 frame_count = frame_count + 1

cap.release()