Nostr.Build does not compress audio or video for pro accounts. If a user uploads the file there, it bypasses client "pre-upload" compression from what I was told by the devs.

Just to be sure I understand correctly, are you saying if an audio/visual creator (where quality is important) copy/pastes that lossless audio/video nostr.build link into Amethyst, that Amethyst perfoms a post-upload compression in order to display it?

And if so, what's the best way in your opinion to optimize the output quality to the end user?

Thx :)