Spatial Scalability with AV1: A Comparison between Scalable AV1 and MPEG-5 LCEVC in Video Quality and Complexity

Abstract

Rising video streaming demands call for scalable delivery methods, enhancing user experiences and reducing bitrate and storage for applications requiring multiple video versions. Spatial scalability in broadcasting eliminates the simulcasting need by serving both HD and UHD users with a single stream. This concept extends to supporting various devices and networks in multi-conferencing, and finds applications in augmented adaptive streaming, scalable video messaging, low latency pixel streaming, and cloud gaming. Moreover, multi-layer encoding enhances user experience by adding features like HDR on an SDR base or bitdepth scalability.