I worked in this space on the CDN non-pirate side and it's basically the same thing but everyone (including the major ones you know) distribute all of their content like that over various cdns and they're all essentially pitted cost/error-rate/latency wise against one another to the bottom. If you're interested in some of the tools used that essentially re-compiles, allows you to interject interstitial ads based... - Source: Hacker News / 3 months ago

I use castr.io, which is a little less expensive than restream imho. I'm on their Multistream Plus plan, which allows up to 2 concurrent streams and multistreaming to up to 5 destinations. I think they charge $12.50/mo, but I've been getting it for less on an annual plan because they offered a special discount during the holidays. Source: over 1 year ago

We're going to broadcast this PPV through castr.io (looking at 1080p) and I'm currently using an ATEM Mini Pro Extreme ISO (HDMI Inputs). Source: over 1 year ago

Https://www.100ms.live/ Super low-latency livestreaming API with premium pricing https://castr.io/ All-In-One, ok pricing https://www.api.stream/ Good, pay as you go pricing https://liveapi.com/pricing/ Good, pay-as-you-go pricing https://www.simplelive.co/livestream One click embeded live stream start-up, pricing seems to good to be true * Example repo which used Jitsi for livestreaming to thousands:... - Source: Hacker News / over 1 year ago

I personally use castr.io which combines them into one chat, however it can be buggy sometimes and not always be the most dependable. I would love to know of other options to pull this off as I multistream myself (even though I am a twitch affiliate). Source: over 1 year ago

You'd be using something else to push simultaneously to YouTube and Twitch. OBS can send RTMP to 2 destinations, or you can use a dedicated service like castr.io or restream. Both take in a single RTMP, and send it to multiple locations. Source: about 2 years ago