Dynamic Adaptive Streaming over HTTP (MPEG-DASH) is an adaptive bitrate streaming technique that breaks the video contents into some sequences of small HTTP-based ﬁle segments in different bitrates. With enough bandwidth now, live latency has become the most serious problem. MPEG has discussed two core experiments Server and Network-assisted DASH (SAND) and Full Duplex HTTPcompatible Protocols (FDH) to improve performance of video streaming. In this paper, we refer the two ideas and complete a low delay streaming system over HTTP 2.0 and WebSocket. Based on our experiments, we could adaptively choose which bitrate of segments to push according to the network condition. With the smaller header size, utilization of bandwidth has been improved and there is 40.22% start-up time saved and 57.96% transmission latency saved averagely in all situations.