这篇教程Python提取视频帧图片实例代码写得很实用，希望能帮到您。
为了从视频中提取每一帧图片，编写Python脚本实现该功能 video_path为指定的视频路径 interval为指定分割视频是是否跳帧，默认不跳帧，即全部分割 width, height 为指定对分割帧图片调整大小，默认不调整 该脚本自动对帧图片编号，设置为7位编码，最多可分割9999999帧图片，即92小时的30FPS视频 # !/usr/bin/env python# -*- coding: utf-8 -*-# ============================================================# @Date : 2021/12/08 14:40:31# @Author : LiShan# @Email : lishan@st.xatu.edu.com# @File : extract.py# @IDE : PyCharm# @Func : Extract video image# ============================================================import os.pathimport timeimport cv2 video_path = "./assets/intersection.mp4"idx1 = video_path.rfind('/')idx2 = video_path.rfind('.')save_path = "./assets/" + video_path[idx1+1:idx2]if os.path.exists(save_path): passelse: os.mkdir(save_path) cap = cv2.VideoCapture(video_path)fps = int(cap.get(cv2.CAP_PROP_FPS))print('FPS:{:.2f}'.format(fps))rate = cap.get(5)frame_num = cap.get(7)duration = frame_num/rateprint('video total time:{:.2f}s'.format(duration)) # width, height = 1920, 1080cnt = 0num = 0# interval = int(fps) * 4interval = 1process_num = frame_num // intervalprint('process frame:{:.0f}'.format(process_num)) t0 = time.time()while cap.isOpened(): ret, frame = cap.read() if ret: cnt += 1 if cnt % interval == 0: num += 1 # frame = cv.resize(frame, (width, height)) cv2.imwrite(save_path + "/%07d.jpg" % num, frame) remain_frame = process_num - num t1 = time.time() - t0 t0 = time.time() print("Processing %07d.jpg, remain frame: %d, remain time: %.2fs" % (num, remain_frame, remain_frame * t1)) else: break if cv2.waitKey(1) & 0xff == 27: break cap.release()cv2.destroyAllWindows()print("done")
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