如何从S3存储桶中读取视频，将视频转换为图像并将图像上传回Java或python中的S3？

Question

下面是我获取S3对象的代码，请指导我如何进一步进行？ 我想

1. 将此S3对象转换为帧
2. 将这些框架上载到新的S3对象中

我不想使用任何本地文件系统，也不想在本地磁盘上存储视频/图像。

我当前正在将代码作为AWS Java函数运行。

package com.amazonaws.samples;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.GetObjectRequest;
import com.amazonaws.services.s3.model.ResponseHeaderOverrides;
import com.amazonaws.services.s3.model.S3Object;

public class GetObject {

    public static void main(String[] args) throws IOException {
        String clientRegion = "us-east-1";
        String bucketName = "carbusbike";
        String key = "videoplayback.mp4";

        S3Object fullObject = null, objectPortion = null, headerOverrideObject = null;
        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(clientRegion)
                    .withCredentials(new ProfileCredentialsProvider())
                    .build();

            // Get an object 

            fullObject = s3Client.getObject(new GetObjectRequest(bucketName, key));
        } catch (AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process 
            // it, so it returned an error response.
            e.printStackTrace();
        } catch (SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
            e.printStackTrace();
        } finally {
            // To ensure that the network connection doesn't remain open, close any open input streams.
            if (fullObject != null) {
                fullObject.close();
            }
            if (objectPortion != null) {
                objectPortion.close();
            }
            if (headerOverrideObject != null) {
                headerOverrideObject.close();
            }
        }
    }

}