QoE-based enhancements of Chunked CMAF over low latency video streams

5G infrastructures are in the roadmap of content delivery services, aiming to forward all broadcast and broadband video traffic using a common telecommunication network architecture. Streaming services will benefit from 5G networks which promise higher capacity, higher bandwidth and lower latency than current infrastructures. However, the widely employed streaming technologies, such as Dynamic Adaptive Streaming over HTTP (MPEG-DASH), require an intrinsic high latency of tens of seconds to enforce the Quality of Experience (QoE). These conditions turn MPEG-DASH unfavourable when compared with a traditional broadcast pipeline for live events in terms of latency. Therefore, improvements on latency of streaming technologies are necessary to deliver live broadcast services over 5G networks. The media industry proposed a Chunked Common Media Application Format (Chunked CMAF) in order to achieve latency under a second. In this paper, we show an implementation of a Chunked CMAF for MPEG-DASH live videos in a real deployment. To further evaluate the benefits of CMAF we evaluate the QoE results when delivering a legacy MPEG-DASH live content compared to a Chunked CMAF-powered one.