In-segment Content Server Adaptation for Dual Adaptation Mechanism in DASH

The paper presents Content server adaptation during the streaming of segments for adding dual adaptation capabilities to Dynamic Adaptive Streaming over HTTP (DASH) connections. In comparison with current Media adaptation solutions, the Content server adaptation reaches higher Quality of Experience in the case when the adaptation counteracts an overload situation at the server side or in the core network overload. In order to take advantages of both Media and Content server adaptations, we propose to carry out the last one (if needed) during the transmission of individual segments, i.e., in-segment Content server adaptation, whereas Media adaptation will be performed (if needed) at the boundary of each segment, as specified in the DASH standard. We implement the proposed solution in DASH library and perform tests in order to demonstrate the advantages of dual adaptation solution.