A new version of the transport profile for running DVB services over IP-based networks has been published by the European Telecommunications Standards Institute (ETSI).
The main changes to the new version are the inclusion of a low latency mode and HDR dynamic mapping.
Beginning life as MPEG DASH, it’s the first internationally-standardized adaptive bitrate HTTP-based streaming solution. DVB DASH adds additional constraints and requirements to improve interoperability for television services with an emphasis on live and on-demand use cases.
The new low latency mode breaks the streamed segments into smaller chunks, which are then delivered as soon as they are available at the encoder. This is able to reduce end-to-end latency from 20–30s down to 3–4s.
There are also new solutions for HDR dynamic mapping, allowing the receiving device to adapt a high dynamic range video signal to the characteristics of the display.
DVB’s Service Information (DVB-SI) specification and its video and audio coding specification have also been revised to support HDR DM.
