MaxillawsNurseyu get quality options which makes it watchable for a good bit of peopleI believe twitch has changed it so you don't have to be a partner to get quality options just have to have a certain amount (80 or so?) viewers watching and then your stream is updated with them.
This happens every time if you aren't partnered so if next time you stream and you only have 20 viewers you won't have quality options
This is correct to some extent. We hit 200+ viewers a few times last season, and never saw the options. However over the past few weeks we have been seeing the options on many of our games, as they have been hitting 250+ viewers.
Transcoding HD streams real-time takes a lot of computing power. Twitch says you only get those options if they have available capacity. From our experience if we consistently hit 100+ viewers we would get the quality options.
Twitch partners have guaranteed trans-coding, I would assume that applies even if you only have 10 viewers.