Popular software encoders such as Flash Media Live Encoder, Open Broadcaster, XSplit, vMix and WireCast used to compose and send streams to distribution servers flows. The source of the video signal, for example, can use a USB webcam connected to a laptop, in this case
Teradek released a new portable encoder VidiU Mini, which allows to receive HDMI input signal such as a video camera, encode it and send to the media server or the popular streaming platform. I wrote an article last days about non portable version, on this page: http://www.iptvsaga.com/teradek-vidiu-live-streaming-without-a-computer/ This device