moviepy快速视频转图片

功能如标题，代码如下：

import os
import numpy as np 
from tqdm import tqdm
import time
from PIL import Image
from moviepy.editor import  VideoFileClip,ImageClip

def convert_video_to_image(video_file_path,output_folder_path,every_n_frames):
    if not os.path.exists(output_folder_path):
        os.makedirs(output_folder_path)
    video = VideoFileClip(video_file_path)
    video_name = os.path.splitext(os.path.basename(video_file_path))[0]
    for i,frame in tqdm(enumerate(video.iter_frames()),total=int(video.fps*video.duration),desc="deal single video"):
        if i%%every_n_frames==0:
            savename = os.path.join(output_folder_path,video_name+'_'+time.strfmate("%Y%m%d%H%M%S")+f"_{i}.jpg")
            #firet method
            # do something else...
            frame=frame[20:30,50:60,:]
            img= Image.fromarray(frame)
            img.save(savename)
            # second method
            # can't do something change image
            frame_image = ImageClip(frame)
            frame_image.save_frame(savename)
    video.reader.close()
    video.audio.reader.close_proc()

使用PIL可以对图片进行额外的处理。以上代码显然要比用opencv来做这个操作简单。