(Free) Online Secure Streaming Video Hosting?

Does anyone know if there is a site like YouTube or Vimeo that uses a secure RTMP protocol so that things like "Video Download Helper" for Firefox won't be able to nab the video? Ideally without having to pay. Hulu uses this true secure streaming that I'm speaking of (YouTube and most others use either progressive download or pseudo-streaming)... I really don't want users to be able to easily just rip my videos because I'm hoping to make profit