I am trying to implement streaming video on iPhone with RTSP protocol.
On Mac, the QuickTime support RTSP and I tested streaming video with this.
This means iPhone can support RTSP, I think.
But I could not implement on iPhone with MPMoviePlayerController.
Who knows about this. Regard!
A quick search on google revealed dropcam https://github.com/dropcam/dropcam_for_iphone for iphone where an RTSP client was implemented. I would advise taking a closer look at that project.