@vercel/blob - Support for Thumbnail in Video Uploads

Summary

I am working on a project where I have to display all the videos that are uploaded in blob. But I have to manually take out the a thumbnail image and uploading it there. For streaming purposes, it is important to have a thumbnail to show.

I propose an addition in response API of upon uploading and listing videos.

{
  pathname: 'profilesv1/user-12345.txt',
  contentType: 'text/plain',
  contentDisposition: 'attachment; filename="user-12345.txt"',
  url: 'https://ce0rcu23vrrdzqap.public.blob.vercel-storage.com/profilesv1/user-12345-NoOVGDVcqSPc7VYCUAGnTzLTG2qEM2.mp4'
  downloadUrl: 'https://ce0rcu23vrrdzqap.public.blob.vercel-storage.com/profilesv1/user-12345-NoOVGDVcqSPc7VYCUAGnTzLTG2qEM2.mp4?download=1',
  thumbnail: 'https://ce0rcu23vrrdzqap.public.blob.vercel-storage.com/.thumbnail/user-12345-NoOVGDVcqSPc7VYCUAGnTzLTG2qEM2.png'
}

Here, .thumbnail folder can be made which is used to store metadata like thumbnail. I would like to discuss its complexity & contribute if it is approved by maintainers of this repo.

Start by reviewing the @vercel/blob upload and listing response APIs described in the issue, including how video uploads are currently represented. Define how thumbnails would be generated, stored in the proposed .thumbnail location, and exposed as a response field; done requires an agreed implementation scope and maintainer approval.