Using JellyFin source code for a OTT platform like Netflix?

[TheDreadPirate]

The biggest problem is scaling, as you stated.

To meet the demand of a large user base you will need to have multiple servers and each server will need multiple GPUs for transcoding. But Jellyfin has no mechanism to gracefully load balance anything. Not network traffic, not GPU usage when transcoding. Nothing.

Additionally, the big streaming services don't transcode because transcoding doesn't scale cheaply (just ask Twitch or Youtube Gaming). They have many many versions of each show and movie and their client determines what the device can play and sends the appropriate version. Jellyfin does not have that capability to automatically serve the best pre-transcode.

Jellyfin would require a significant rework, not just cosmetically, to be a viable commercial streaming platform.