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python實(shí)現(xiàn)視頻分幀效果

更新時(shí)間：2019年05月31日 11:21:16 作者：萬(wàn)三豹

這篇文章主要為大家詳細(xì)介紹了python實(shí)現(xiàn)視頻分幀效果，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了python實(shí)現(xiàn)視頻分幀的具體代碼，供大家參考，具體內(nèi)容如下

import cv2 
vidcap = cv2.VideoCapture('005.avi') 
success,image = vidcap.read() 
count = 0 
success = True 
while success: 
 success,image = vidcap.read() 
 cv2.imwrite("frame%d.jpg" % count, image)  # save frame as JPEG file 
 if cv2.waitKey(10) == 27:      
  break 
 count += 1

python tools：將視頻的每一幀提取并保存

# coding=utf-8 
 
import os 
import cv2 
 
videos_src_path = "/home/wgp/視頻/" 
video_formats = [".MP4", ".MOV"] 
frames_save_path = "/home/wgp/視頻/" 
width = 320 
height = 240 
time_interval = 50 
 
 
def video2frame(video_src_path, formats, frame_save_path, frame_width, frame_height, interval): 
 """ 
 將視頻按固定間隔讀取寫入圖片 
 :param video_src_path: 視頻存放路徑 
 :param formats:　包含的所有視頻格式 
 :param frame_save_path:　保存路徑 
 :param frame_width:　保存幀寬 
 :param frame_height:　保存幀高 
 :param interval:　保存幀間隔 
 :return:　幀圖片 
 """ 
 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 "正在讀取視頻：", 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("讀取失敗!") 
 
  while(success): 
   success, frame = cap.read() 
   print "---> 正在讀取第%d幀:" % 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)

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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