如何将视频同时上传到s3，创建缩略图，并使用nodejs保存到同一存储桶中的另一个文件夹中？

npm install aws-sdk

const AWS = require('aws-sdk');

AWS.config.update({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_ACCESS_KEY',
  region: 'YOUR_REGION'
});

const s3 = new AWS.S3();

const params = {
  Bucket: 'YOUR_BUCKET_NAME',
  Fields: {
    key: 'video.mp4'
  }
};

s3.createPresignedPost(params, (err, data) => {
  if (err) {
    console.error('Error creating presigned URL for video upload:', err);
  } else {
    console.log('Presigned URL for video upload:', data);
  }
});

const axios = require('axios');
const FormData = require('form-data');

const form = new FormData();
form.append('key', 'video.mp4');
form.append('file', videoFile);

axios.post(presignedUrl, form, {
  headers: form.getHeaders()
})
  .then(response => {
    console.log('Video uploaded successfully:', response.data);
  })
  .catch(error => {
    console.error('Error uploading video:', error);
  });

const ffmpeg = require('fluent-ffmpeg');

const videoPath = 'path/to/video.mp4';
const thumbnailPath = 'path/to/thumbnail.jpg';

ffmpeg(videoPath)
  .screenshots({
    timestamps: ['50%'],
    filename: 'thumbnail.jpg',
    folder: 'path/to'
  })
  .on('end', () => {
    console.log('Thumbnail created successfully');
  })
  .on('error', err => {
    console.error('Error creating thumbnail:', err);
  });

const thumbnailParams = {
  Bucket: 'YOUR_BUCKET_NAME',
  Key: 'thumbnails/thumbnail.jpg',
  Body: thumbnailFile
};

s3.putObject(thumbnailParams, (err, data) => {
  if (err) {
    console.error('Error uploading thumbnail:', err);
  } else {
    console.log('Thumbnail uploaded successfully:', data);
  }
});