Transcoding for 1080p, which is usually 6-7mbit/s, you can downsample it to 300kbits if you like. FYI, Netflix is about 2-3mbit, premium is like maybe 10.
Transcoding is not allowed for 4k.
4k bitrate varies from 10mbit/s to like 60-80mbit/s, so at least 100mbit link is recommended.
Almost all new content is available both in 1080p and 4k. Some older stuff only in 4k.
Is it you, lemmy, brigading that GitHub gist? @ZendeskTeam is being is already dead, but don’t worry, you can still come and give them another kick.