I've been participating in MPEG's DASH group, and currently a lot of work has been focused on reducing live streaming latency. The latency problem in DASH is that clients have to poll servers to check for new media segments. If they poll too slowly, it introduces latency, but if they poll too quickly, it increases server load. When MPD's are dynamic, a client needs to poll the server until it finds a new MPD, then request newly available segments, then only after the segment has downloaded en...
