Avoiding 413 Error of filesize exceeds 4.5mb by uploading directly to S3

[subtle dune]

I was looking at this post on vercel: https://vercel.com/guides/how-to-bypass-vercel-body-size-limit-serverless-functions#upload-directly-to-the-source
It goes over how to upload a file bigger than 4.5mb to vercel/blob. It does note that its possible to do it for S3. I am looking for some knowledge on how exactly to do this when submitting data as multipart-form-data and then directly uploading it to S3. Would appreciate some guidance on this.

[warped zenith]

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[raw olive]

the keyword is "presigned url"

you generate a presigned url, then you send the file directly to s3 via that url instead of sending through the nextjs server

[subtle dune]

ooooh thats good

thanks!