Question / Help Profile Main or High for streaming and other questions

[CatCatTacoTaco]

Getting back into streaming after 4 years and I have 2 possibly silly questions.

1. Should I use Main or High when streaming on Twitch and Mixer? Some people say to use High, some people say use Main but no one says why for either or minus the "old laptops and old phones can't see high profile" answer.

2. Do Downscale filters matter when you are using 720p (2500 bitrate if that helps as well)

3. Is there an updated comparison of the Downscale filters for Bilinear, Area, Bicubic and Lanczos

 

[koala]

1. use high, it makes better compression possible and decoders that don't support it are not really in use any more. At least if you stream to Twitch and Mixer, your viewers are not the kind of people that uses obsolete hardware.
2. If your source material is not 720p, then probably yes.
3. The visual appearance of a filter is dependent on the footage. If you want the filter that is considered best for general purpose, for move-like footage, you will probably choose Lanczos. The traditional sequence is bilinear (oldest filter, least system resources) -> bicubic (newer than bilinear, more system resources) -> Lanczos (even newer than bicubic, even more system resources). As far as I know, the development of these filters tries to improve movie-like footage, try to keep edges sharp despite the inevitable blurring.
Area I don't know, it's brand new and I don't know what is different. If the filter is what was proposed in this post, it's a simple filter with probably the computing complexity of bilinear, best suited for upscaling pixel-graphics content like older 8-bit games or such games like perhaps Minecraft.