At its 149th meeting, MPEG promoted three key standards to Final Draft International Standard (FDIS) status: MPEG-I Immersive Audio, MPEG Immersive Video (Second Edition), and MPEG-DASH (Sixth Edition). These advancements bring significant improvements to immersive content coding, adaptive streaming, and low-latency delivery. Additionally, MPEG issued a Call for Proposals for Lenslet Video Coding and reached a Committee Draft for Avatar representation format, alongside adding new SEI Messages to HEVC.
These ratifications move immersive media from proprietary silos into a standardized interoperable ecosystem. The shift to 6DoF support in both audio and video allows developers to build more interactive environments that remain functional across diverse hardware like the Apple Vision Pro or Meta Quest 3. For streaming operators, the Sixth Edition of DASH provides a standardized bridge to reduce latency by up to 1.8 seconds, directly challenging Apple's LL-HLS dominance. Market observers should watch for the first commercial implementations of the MIV Simple MPI profile, which could significantly lower the hardware entry bar for volumetric video content on mobile devices.
MPEG's 149th meeting in Geneva (January 20-24, 2025) produced FDIS status for three standards that now enter the final approval pipeline before becoming International Standards. The ACM SIGMM Records column on the 149th MPEG meeting confirmed the promotion of MPEG-I Immersive Audio, MPEG Immersive Video Second Edition, and MPEG-DASH Sixth Edition, noting these represent the culmination of multi-year working group efforts across WG 3, WG 4, and WG 6. The FDIS stage is the last technical gate before formal publication as an International Standard, meaning no further technical changes are permitted and national bodies vote on the final text.
MPEG's 150th meeting, held after the Geneva session, continued advancing immersive audio and video coding standards with additional promotions to Draft International Standard status, indicating sustained momentum in the immersive media pipeline. The progression from FDIS at the 149th meeting to DIS promotions at the 150th shows that MPEG's immersive media work program is not a one-time event but a rolling cadence of standardization milestones that will keep producing implementable specifications through 2025 and 2026.
On the DASH side, the Sixth Edition's content steering and low-latency enhancements build on work that began in earlier editions. At the 148th meeting, MPEG Systems completed ISO/IEC 23009-9, a new part of MPEG-DASH addressing redundant encoding and packaging for segmented live media, known as REAP. This companion specification, which reached Committee Draft stage at the 148th meeting, complements the Sixth Edition's segment sequence addressing improvements by standardizing how live streams can be redundantly encoded and packaged across multiple origins, a capability that pairs directly with the content steering signaling now embedded in the core DASH specification.
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