Fairly sure that's how the Chromecast SDK works. That will cover a good amount of ground for you, as many modern TVs are chromecast targets. Source: about 2 years ago

But I don't believe Fire TV supports Casting (the specific Google-developed protocol that Chromecast and other devices support). Source: over 2 years ago

This might help: https://developers.google.com/cast. Source: about 3 years ago

Is this the correct nimble? https://wmspanel.com/nimble. Source: over 1 year ago

Nimble Streamer software media server can receive the streams and align them together before sending into NDI output. Check this video as example. Source: over 1 year ago

ClearView Flex and Evercast are good turn key services. If you want to DIY, https://wmspanel.com/nimble is quite decent. All are well under 2 seconds, with Evercast being the fastest. Source: over 1 year ago

Within the server’s various VMs and containers (pretty much all Linux containers of some sort), most video signals will be shipped around using NDI. NDI uses CPU, not GPU, but isn’t terribly resource-heavy from what I can tell. I’ll likely have multiple instances of OBS deployed for source ingest (browser sources especially) and encoding/streaming/recording. It seems like I’d benefit from NVIDIA GPU here, as the... Source: over 2 years ago

Then, a year later, he wrote another blog, this time using the Nimble Streamer Server which transcodes the video stream into Softvelum Low Delay Protocol, which can be then used by web clients (as well as a thick client via HTML5 component). Source: over 2 years ago