s3 getObject -> generateThumbnail -> s3.putObject workflow

[alignsoft]

I'm running a Node app on a server and using S3 for all the file storage. When uploading a video file, it's sent directly from the browser to the S3 store, and then I run a Node function to generate the thumbnail, reading the file from S3 to Node, generating the thumbnail and writing the resulting file back to S3 without ever saving it locally on the app server.

I'm trying to use thumbsupply to generate previews for video files, but can't get the syntax right for returning the thumb as a buffer that can be passed into the s3.putObject function.

I'm not sure if the error being returned is from the input to thumbsupply being in the wrong form, or the resulting generated thumb not being the right form (a Buffer) for s3.putObject.

  s3.getObject({ Bucket: myBucket, Key: sourceFilename })
    .promise()
    .then(data => thumbsupply.generateThumbnail(data.body,
      {
        size: thumbsupply.ThumbSize.MEDIUM,
        mimetype: "video/mp4"
      })
    )
    .then(buffer => s3.putObject({
      Body: buffer,
      Bucket: myBucket,
      ContentType: 'image/jpeg',
      Key: destinationFilename,
      ACL: 'public-read-write'
    })

Can you shed some light on what I'm missing here?
Thanks!

[alignsoft]

Is this something that’s possible with the current library, or would it require changes to your code? I’m trying to determine whether this is something I might be able to have working in the short term, or if I should be looking for a different solution. This library seems perfect for this, so I’m hoping this will work. Thanks in advance.

[RyanAfrish7]

It's not something available readily. However, the usecase sounds reasonable and is a good addition to the library.

[rserentill]

Hi there! Has there been any progress on this? Is it possible to get a thumbnail from a buffer without needing to save the video locally?
Thanks!