python影片抽幀

# -*- coding:utf8 -*-
import cv2
import os
import shutil
 
 
def get_frame_from_video(video_name, interval):
    """
    Args:
        video_name:輸入影片名字
        interval: 儲存圖片的幀率間隔
    Returns:
    """
 
    # 儲存圖片的路徑
    save_path = video_name.split('.MOV')[0] + '/'
    is_exists = os.path.exists(save_path)
    if not is_exists:
        os.makedirs(save_path)
        print('path of %s is build' % save_path)
    else:
        shutil.rmtree(save_path)
        os.makedirs(save_path)
        print('path of %s already exist and rebuild' % save_path)
 
    # 開始讀影片
    video_capture = cv2.VideoCapture(video_name)
    i = 0
    j = 0
 
    while True:
        success, frame = video_capture.read()
        i += 1
        if i % interval == 0:

            cv2.imshow("Image", frame) 
            cv2.waitKey (1)  
            # 儲存圖片
            j += 1
            #save_name = save_path + str(j) + '_' + str(i) + '.jpg'
            save_name = save_path + str(j)  + '.jpg'
            cv2.imwrite(save_name, frame)
            print('image of %s is saved' % save_name)
        if not success:
            print('video is all read')
            break
 
 
if __name__ == '__main__':
    # 影片檔名字
    video_name = '/media/dongdong/新加捲/2Work/3MyWork/1data/3大門外高空資料/80米/DJI_0559.MOV'
    interval = 20
    get_frame_from_video(video_name, interval)
    cv2.destroyAllWindows()