I've been testing the StreamingURLResource all evening and it does not seem to work. I set up a NetWORCK cONNECTION and published a live stream from a webcam, I have successfully streamed it back to a video object but not to the MediaPlayerSprite via the VideoElement.
The command instruction was
$v8sprite.element = new VideoElement(new NetLoader(),new StreamingURLResource(new FMSURL("rtmp://myserver/river/alpha/publisher",true),StreamType.LIVE));
I had successfully streamed stored video using the same command and the StreamType.RECORDED param