The text of ISO/IEC 23009-1 2nd edition PDAM1 has been approved which may be referred to as MPEG-DASH v3 (once finalized and integrated into the second edition, possibly with further amendments and corrigenda, if applicable). This first amendment to MPEG-DASH v2 comprises accurate time synchronization between server and client for live services as well as a new profile, i.e., ISOBMFF High Profile which basically combines the ISOBMFF Live and ISOBMFF On-demand profiles and adds the Xlink feature.
Additionally, a second amendment to MPEG-DASH v2 has been started featuring Spatial Relationship Description (SRD) and DASH Client Authentication and Content Access Authorization (DAA).
Other DASH-related aspects include the following:
- The common encryption for ISOBMFF has been extended with a simple pattern-based encryption mode, i.e., a new method which should simply content encryption.
- The CD has been approved for the carriage of timed metadata metrics of media in ISOBMFF. This allows for the signaling of quality metrics within the segments enabling QoE-aware DASH clients.