Python将一段视频按帧进行裁剪

import cv2
import argparse
import os
def parse_args():
    """
    Parse input arguments
    """
    parser = argparse.ArgumentParser(description='Process pic')
    parser.add_argument('--input', help='video to process', dest='input', default=None, type=str)
    parser.add_argument('--output', help='pic to store', dest='output', default=None, type=str)
    #default为间隔多少帧截取一张图片
    parser.add_argument('--skip_frame', dest='skip_frame', help='skip number of video', default=100, type=int)
    #input为输入视频的路径 ，output为输出存放图片的路径
    args = parser.parse_args(['--input',r'D:YDD_masterYDD_ProgramIntellectual EducationMy_Databaseraw6月6日A318右_Trim.mp4','--output',r'D:YDD_masterYDD_ProgramIntellectual EducationMy_Databaseprocessvideo_left'])
    return args

def process_video(i_video, o_video, num):
    cap = cv2.VideoCapture(i_video)
    num_frame = cap.get(cv2.CAP_PROP_FRAME_COUNT)
    expand_name = '.jpg'
    if not cap.isOpened():
        print("Please check the path.")
    cnt = 0
    count = 0
    while 1:
        ret, frame = cap.read()
        cnt += 1
        #  how
        # many
        # frame
        # to
        # cut
        if cnt % num == 0:
            count += 1
            cv2.imwrite(os.path.join(o_video, str(count) + expand_name), frame)

        if not ret:
            break

if __name__ == '__main__':
    args = parse_args()
    if not os.path.exists(args.output):
        os.makedirs(args.output)
    print('Called with args:')
    print(args)
    process_video(args.input, args.output, args.skip_frame)

输入视频路径和输出视频路径最好不要带有中文，否则可能会导致帧图片存入失败。

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