How to upload a large file

[bkraeling]

We have a Remix app where we have a route that uploads a video file to S3 using the AWS SDK. Generally, the flow we have works. It uses unstable_parseMultipartFormData and an UploadHandler function. We are seeing some errors related to large files.

We've confirmed that it isn't S3 throwing the error, or Remix itself, since there aren't any limitations on request size or response time. We've been able to upload our large file (10 GB+) on a very fast connection, but when the connection is slower it doesn't finish. The culprit looks to be the browser timeout, which times out at exactly 5 minutes.

What's the best way to approach this? If we upload it via the server, we get the timeout. Is there a way to initiate the upload via the client and prevent the browser from killing the request after 5 minutes?

Thanks for your help in advance.