In one of the first significant pre-NAB announcements, cloud encoding companyZencoder is releasing the Zencoder Live Cloud Transcoding service, an open API that offers simple and scalable encoding for live video.
Using the API, publishers upload an RTMP stream from a lightweight encoder on a laptop. Once uploaded, Zencoder creates adaptive bitrate HLS and RTMP streams for viewers.
Might be interesting to test - maybe more similar offers to come during NAB...