@dtgeek I do want to point out that good resize algorithms for videos have long existed and the choice not to use one and instead opt for something much more computationally expensive is... really weird to me. I guess it's because they could offset the computation to some online service? It probably cost them even more in total though...

The algorithms I'm talking about can be done usually in or really close to realtime on a modern processor... No specialized GPU or anything needed.

They just... didn't even bother to look, did they?

Heck, even lanczos3 would have produced exponentially better results without even dipping into specialized algorithms...