RTMP Hosting
Few hosting companies support media servers or RTMP Hosting, first because it is very resource intensive and so needs high end servers but also because not many people are familiar with the management of media servers and if they are it becomes expensive to hire them on a permanent basis.
There is but a few like Red5 Server and Hosting Marketers. Hosting Marketers was the first hosting company offering media servers on they shared plan, it started with Video One costing $9.95 a month and with one RTMP assigned to the account free of any extra fee. The rtmp was from red5, but now for the last 5 years Hosting Marketers is also offering Wowza Hosting which supports RTMP and HTML5 protocols.