The discussion revolves around issues with Twitch embeds in Discourse, specifically their small size (300x150 vs. YouTube’s 480x270) and auto-play behavior. AdamCapriola argues that Twitch embeds should not auto-play and should match YouTube’s display size. chapel explains that this is due to Twitch’s metadata limitations, requiring a custom onebox parser. codinghorror agrees, stating it’s a Twitch issue. DanielMarquard shares a link to a related topic, while codinghorror questions if Twitch oneboxes auto-play. eviltrout notes that Twitch no longer embeds videos, and codinghorror suggests native handling. eviltrout mentions adding improved Twitch embedding support in the onebox gem. Falco shares a Twitch clip link, highlighting the ongoing discussion.
YouTube videos don’t auto-play, so I don’t think Twitch embeds should either. Also, the display is small compared to YouTube (300x150 vs. 480x270). A consistent width for embeds would be cool.
Oh and the preview display for Twitch channels is kind of odd (it shows the channel’s profile image but only the embed is shown once the post is published).
Unfortunately this is what Twitch proves in their meta data that Discourse uses to embed.
It would require creating a custom Twitch Onebox parser which would do it’s own logic. That or similar to LazyYT, create a LazyTwitch which would make a better preview and click to play without actually loading the Twitch embed.
This is a Twitch issue as @chapel noted. Maybe they have improved it by now?
Just found this topic doing a random search for something unrelated. If this is still a problem for you, I developed a Twitch Onebox to address this.
https://meta.discourse.org/t/twitch-onebox-for-discourse/54997
I don’t think Twitch oneboxes autoplay any more do they @eviltrout?
We should probably handle Twitch natively with a custom player onebox as they are big enough to justify it.
I added better twitch embedding support in the onebox gem:
https://github.com/discourse/onebox/commit/7f4b9ceacee10a3b5a580393191c606e2cd44594
Let’s test with this brazilian gem 
