But now, the poor mans version.
FMLE -> RTMP stream -> crtmpserver -> RTSP stream -> vMix/Vidblaster Stream Input RTSP over TCP -> External SDI -> CasparCG
The building blocks
Flash Media Live Encoder ( Mac or Windows )
Still probably one of the standards and used by a number of other products to be able to stream. This can be used stand alone as it takes a video and audio input, or with a number of software mixer. It is also available for Mac and Windows.
We will use the RTMP streaming and you need to match the output quality and data rate to what bandwidth is available.
The "FMS URL" and "Stream" will be where we are running the crtmpserver.
CRTMPserver ( Linux )
Small project that I think has gone unnoticed in the work of streaming, but ends up to be the quickest way to get the stream from a to be.
In my case I have a hosted webserver available and it was very quick to simple download (do not use the disto versions) the latest build, make a simple configuration change and launch it.
The change to the configuration is to enable the RTSP streaming option, and can be done in configs/flvplayback.lua file that is part of the download. Simple remove the remarks for the section
And launch as root to gain access to the port under 1024
I suggest doing this in a screen so you can keep an eye on it while making the connections.
Both these products are live video mixing environments, with graphical capabilities. They both can also output in a number of formats which includes SDI support.
In our case we have the Vmix with a BlackMagic Decklink Quad and we send the SDI outputs into the head end.