python 视频转图片

1. 使用cv2.VideoCapture捕获视频的帧
2. 使用cv2.imgwrite将帧保存为图片

实现按帧数间隔保存图片，默认保存每1帧

图片按照编号保存

import cv2


#按帧数间隔保存图片，默认为1帧
def video2img(video_path, out_path, interval=1):
    cap = cv2.VideoCapture(video_path)

    i, j = 0, 0
    while cap.isOpened():
        i += 1
        ret, frame = cap.read()

        if i % interval == 0:
            j += 1
            if ret:
                
                #按编号保存图片
                filename = out_path + r'img' + str(j) + '.jpg'
                cv2.imwrite(filename, frame)
            else:
                break

    cap.release()


video_path = r'视频路径'
out_path = r'输出文件路径'

video2img(video_path, out_path)