视频抽帧脚本

最新推荐文章于 2025-03-04 13:21:11 发布

原创最新推荐文章于 2025-03-04 13:21:11 发布 · 365 阅读

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该代码片段使用OpenCV库从指定目录下的视频文件中每90帧保存一帧为JPEG图片，图片保存路径为当前目录下的'save'子目录。

# -*- coding: utf-8 -*
import cv2
import os

#dir = r"F:\wenjian\trainingData_3.3\VideoData"
dir = r"./20191009_非机动车雨篷视频"

for eachVid in os.listdir(dir):
  vPath = dir + "/" + eachVid 
  #vPath = r"./20191009_非机动车雨篷视频/@20190811194708_20190811194715_6735.dav"
  vidcap = cv2.VideoCapture(vPath)
  success,image = vidcap.read()
  count = 0
  while success:
    if count%90==0:
      #cv2.imwrite(f'F:\\wenjian\\test\\_{count}.jpg', image)     # save frame as JPEG file
      cv2.imwrite('./save/'+eachVid+f'_{count}.jpg', image)     # save frame as JPEG file
      #cv2.imwrite(r'save/_{count}.jpg', image)     # save frame as JPEG file
    success,image = vidcap.read()
    print('Read a new frame: ', success)
    count += 1