I was beggining to test the new HTTP dynamic streaming with OSMF, but so far I just found in AllExamples.as the use of F4MElement as media Element.
I think there is more ways to make it work, but I need some documentation. I also found the HTTPStreamingNetLoader, but no examples of this in action.
I'd really like to have more real examples of OSMF handling this new great development, in order to fully use it.
If you use a Default MediaFactory to load a F4M that contains for a http streaming url, the stream should work as any other types of delivery method.
OSMFPlayer is one of our OSMF player that handles http streaming inclusively as an example. You can find the player under /trunk/apps/samples/framework/OSMFPlayer
For http streaming to work, you have to set up the FMS server correctly if you haven't done so. For http streaming, the server packager will generate the f4m for VOD or Live/DVR. There are some information on http streaming here. http://www.adobe.com/products/httpdynamicstreaming/
Also there is a forum for http streaming as well from Adobe. http://forums.adobe.com/community/flash/httpdynamicstreaming
Please let me know if you have further questions.