Python OpenCV对本地视频文件进行分帧保存的实例

Python  /  管理员 发布于 7年前   168

如下所示：

# coding=utf-8 import osimport cv2 videos_src_path = "/home/wgp/视频/"video_formats = [".MP4", ".MOV"]frames_save_path = "/home/wgp/视频/"width = 320height = 240time_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)

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