Python OpenCV对本地视频文件进行分帧保存的实例

如下所示：

# coding=utf-8

import os
import cv2

videos_src_path = "/home/wgp/视频/"
video_formats = [".MP4", ".MOV"]
frames_save_path = "/home/wgp/视频/"
width = 320
height = 240
time_interval = 50

def video2frame(video_src_path, formats, frame_save_path, frame_width, frame_height, interval):
"""
将视频按固定间隔读取写入图片
:param video_src_path: 视频存放路径
:param formats:包含的所有视频格式
:param frame_save_path:保存路径
:param frame_width:保存帧宽
:param frame_height:保存帧高
:param interval:保存帧间隔
:return:帧图片
"""
videos = os.listdir(video_src_path)

def filter_format(x, all_formats):
 if x[-4:] in all_formats:
  return True
 else:
  return False

videos = filter(lambda x: filter_format(x, formats), videos)

for each_video in videos:
 print "正在读取视频：", each_video

each_video_name = each_video[:-4]
 os.mkdir(frame_save_path + each_video_name)
 each_video_save_full_path = os.path.join(frame_save_path, each_video_name) + "/"

each_video_full_path = os.path.join(video_src_path, each_video)

cap = cv2.VideoCapture(each_video_full_path)
 frame_index = 0
 frame_count = 0
 if cap.isOpened():
  success = True
 else:
  success = False
  print("读取失败!")

while(success):
  success, frame = cap.read()
  print "---> 正在读取第％d帧:" ％ frame_index, success

if frame_index ％ interval == 0:
   resize_frame = cv2.resize(frame, (frame_width, frame_height), interpolation=cv2.INTER_AREA)
   # cv2.imwrite(each_video_save_full_path + each_video_name + "_％d.jpg" ％ frame_index, resize_frame)
   cv2.imwrite(each_video_save_full_path + "％d.jpg" ％ frame_count, resize_frame)
   frame_count += 1

frame_index += 1

cap.release()

if __name__ == '__main__':
video2frame(videos_src_path, video_formats, frames_save_path, width, height, time_interval)

来源：https://blog.csdn.net/bskfnvjtlyzmv867/article/details/79970146