Overview
ISO/IEC 23090-32:2025 - Information technology - Coded representation of immersive media - Part 32: Carriage of haptics data - specifies how haptic media is carried inside ISO base media files. The standard defines how MIHS (multimodal immersive haptics stream) bitstreams and their samples are mapped to ISOBMFF tracks, how metadata and grouping are signalled, and how haptics are synchronized and encapsulated for delivery (including MPEG‑DASH).
Key topics and technical requirements
- Scope and format mapping
- Specifies carriage of haptic media in ISO base media files (ISOBMFF) and defines MIHS tracks and MIHS band tracks (tracks with 'hapt' handler type).
- References the MIHS bitstream format defined in ISO/IEC 23090-31.
- Track and sample structures
- Defines MIHSSampleEntry and MIHSBandSampleEntry types, sample formats, and constraints on MIHS samples and sample timestamps.
- Introduces concepts like bands, channels, perceptions, and experiences as hierarchical units for haptic content.
- Boxes, metadata and grouping
- Specifies a set of ISOBMFF box types and sample/grouping boxes such as MIHS configuration, haptic experience description, channel/band description boxes, and sample grouping types (e.g., presentation dependency, silent units).
- Synchronization and inter-media timing
- Describes synchronization mechanisms to align haptic tracks with audio, video, and other media representations.
- Encapsulation and streaming (MPEG‑DASH)
- Provides guidance for DASH MPD signalling of haptics, multi-track support, segmenting, MPD schema (Annex E), and examples (Annex F).
- Normative references
Practical applications and who uses it
- VR/AR platform developers: integrate haptics tracks into immersive content packages and ensure synchronization with audio/video.
- Media player and engine implementers: decode and render haptics from ISOBMFF files and support MIHS tracks and sample entries.
- Content creators and tool vendors: author, package, and multiplex haptic experiences into ISO base media files for distribution.
- Streaming services and CDN architects: deliver haptic-enabled content using MPEG‑DASH with correct MPD signalling and segmenting.
- Haptic device manufacturers: map device channels/bands described in files to physical actuators.
Related standards
This standard is essential for interoperable carriage, streaming, and synchronized playback of haptics in immersive media workflows. Keywords: ISO/IEC 23090-32, haptics, MIHS, ISOBMFF, ISO base media file, MPEG‑DASH, haptic experience, haptic channels.
Open preview (PDF)Information technology — Coded representation of immersive media — Part 32: Carriage of haptics data
