multimedia
Enable an AI agent to recognise multimedia works or presentations, assess whether their combined media can be experienced as intended, and determine permitted playback, adaptation and distribution actions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise multimedia works or presentations, assess whether their combined media can be experienced as intended, and determine permitted playback, adaptation and distribution actions.
Multimedia is content or a mode of communication that combines two or more media forms, such as text, still images, audio, animation and video, within a coordinated presentation or application.
It can be Inspect components and identify how their media forms contribute to the combined experience; Select a compatible playback environment and diagnose missing dependencies; Traverse presentation paths and check timing, navigation and component availability; Enable or select accessible alternatives while preserving the intended meaning; Adapt layout, encoding or component selection within documented constraints; Prepare a playable preservation or distribution package after checking dependencies and permissions.
Distinguishing features
Identify distinct media forms contributing to one intended experience; multiple files in the same medium alone do not establish multimedia.
Identify an intended relationship among components, such as narration tied to a diagram, rather than treating an unrelated folder of assets as one multimedia work.
Distinguish the combined content from equipment advertised as multimedia-capable: a projector or laptop is a playback device.
Record whether interaction exists instead of assuming multimedia must be interactive.
Test ambiguous cases such as audiovisual video and illustrated documents against an explicit inclusion rule, since the registry provides no definition resolving their treatment.
Scope
+ The boundary and identity of a coordinated multimedia work or presentation
+ Participating text, images, audio, video, animation and other expressive media
+ Spatial arrangement, timing and relationships among media components
+ Navigation, interaction and alternative presentation paths
+ Playback dependencies, accessibility alternatives and component-level permissions
- Computers, projectors, speakers and other playback hardware as device kinds
- Authoring software and media players as software products
- Individual source photographs, recordings and texts beyond their roles in the combined work
- Network and storage infrastructure beyond requirements imposed by the presentation
- Production organisations, creative occupations and production workflows as independent things
Characteristics
- Participating media forms
- text, still image, audio, video, animation, other specified form Establishes what is combined and which rendering capabilities are required.
- Component role
- component linked to its role: primary narrative, explanation, ambience, control, accessibility alternative or other specified role Separates meaning-bearing components from decorative or substitutable material.
- Presentation organisation
- linear, branching, spatial, user-paced, event-driven or mixed Determines how the intended experience is traversed and assessed.
- Temporal alignment requirement
- required offset and permitted deviation in milliseconds for a specified component pair or cue Supports checks that speech, captions, animation and other timed components remain meaningfully aligned.
- Presentation duration
- seconds for a specified path; variable or unbounded where applicable Avoids assigning a misleading fixed duration to branching or user-paced experiences.
- Interaction inputs
- none, pointer, keyboard, touch, voice, sensor or other specified input Identifies how users control the experience and where alternative controls are needed.
- Playback dependency
- component or presentation linked to required format support, runtime, service, font or device capability Explains why available assets may still fail to produce a working presentation.
- Presentation integrity
- untested, complete, degraded or blocked, with affected components and observed effects Distinguishes successful file access from a usable combined experience.
- Accessibility alternative
- component or interaction linked to captions, transcript, description, alternative text or alternative control Makes coverage and equivalence of alternative experiences assessable.
- Permission coverage
- documented, partial, unknown or conflicting for a specified action and component set Prevents permission for one component from being assumed to cover the entire presentation.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 28 questions.
Multimedia identity Defines the combined work and distinguishes it from its assets, carriers and playback equipment.
The undefined registry name and physical-object placement leave the intended sense unresolved.
Media combination boundary
Establishes which combinations qualify as multimedia in this model.
Qualifying combination
Record the participating media forms and the rule used to recognise their combination as multimedia.
- Which distinct media forms contribute to the intended experience, and what makes their combination qualify as multimedia? definition
- Does the adopted boundary include ordinary audiovisual video and illustrated text, or require a further form of coordination? boundary
Work, edition and carrier
Separates the multimedia work from particular arrangements and embodiments.
Presentation identity
Identify which components constitute a particular presentation and how it relates to other editions or carriers.
- What identifies this combined work independently of the disc, website, installation or package carrying it? definition
- Which component or sequencing changes create a distinct edition rather than another encoding of the same presentation? boundary
Media composition Describes component roles and how their combination produces meaning.
A multimedia model must explain what is lost when one medium is removed or altered.
Component roles
Identifies the contribution and replaceability of each media component.
Meaning-bearing components
Record whether components provide unique information, reinforce other media or serve a decorative purpose.
- Which information is supplied uniquely by each text, image, audio, video or animation component? definition
- Which components can be omitted or substituted without losing information or changing the intended experience? action
Cross-media relationships
Captures correspondence and layout relationships between media forms.
Component correspondence
Record links such as a spoken explanation referring to a highlighted region or text labelling an animation.
- Which passages, regions, sounds or events refer to one another across media components? relation
- What spatial relationships must survive resizing or rearrangement for those references to remain understandable? boundary
Timing and interaction Describes temporal coordination and user control of the presentation.
Correct assets can still produce a broken multimedia experience when cues drift or navigation strands the user.
Temporal coordination
Defines clocks, cues and required alignment among timed components.
Synchronised presentation
Record which components share a timeline and how playback changes affect their alignment.
- Which component pairs require temporal alignment, and what offset and tolerance apply to each pair? measurement
- How must linked components respond when a user pauses, seeks, changes speed or encounters buffering? action
Navigation and response
Describes user-paced progression, branching and responses to input.
Presentation paths
Record reachable presentation states and the inputs or events that connect them.
- Which choices or events change the sequence, visible media or available presentation paths? definition
- How can a user discover controls, return to earlier content and recover from an interrupted branch? action
Playback and preservation Captures requirements for rendering and retaining the combined experience.
Preserving individual media files does not necessarily preserve their arrangement, behaviour or external dependencies.
Rendering requirements
Identifies capabilities needed to render components together.
Compatible playback
Record supported environments and the observed consequences of missing capabilities.
- Which formats, codecs, runtimes, fonts, services and output capabilities are required for this presentation? definition
- Which playback checks demonstrate that component rendering, timing and interaction work in a specified environment? action
Experience preservation
Identifies what must accompany media assets to reconstruct the presentation.
Reconstructable package
Record dependencies, arrangement instructions and reference evidence needed for future playback.
- Which externally hosted assets, executable behaviours and timing or layout instructions must be retained to reconstruct the experience? boundary
- What reference recording or documented walkthrough establishes the intended appearance and behaviour for migration checks? provenance
Accessible and permitted use Connects alternative experiences and action permissions to the media components they cover.
Accessibility and reuse depend on the coverage of the whole combination, including interactions and separately sourced assets.
Equivalent access
Assesses access to information and controls across sensory and input requirements.
Alternative experience coverage
Record alternatives and gaps for information conveyed by particular media or interactions.
- Which spoken, visual and non-speech information is covered by captions, transcripts, descriptions or text alternatives? boundary
- Can users complete each essential presentation path using the supported alternative controls and timing adjustments? action
Component rights
Tracks evidence supporting use of components within the combined work.
Combined-use permissions
Record the permission evidence and conditions relevant to proposed playback, adaptation or distribution.
- What licence, ownership record or permission statement supports the intended use of each included component? provenance
- Which proposed adaptations or distributions remain unsupported because a component permission is missing, limited or unclear? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The recorded PHY.OBJ domain suggests a physical object, but the ordinary sense described here is content or a communication mode; verify whether equipment was intended.
- Definitions differ over whether simple combinations such as illustrated text qualify or whether electronic integration is required.
- There are no useful category-wide capacity, dimension or performance ranges; measurements depend on the particular content, format and delivery system.
- Which of these check these first hold for the sense of multimedia this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Linear multimedia presentations
- Interactive multimedia
- Hypermedia
- Multimedia installations
- Live multimedia performances
- Which of these kinds and varieties hold for the sense of multimedia this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- IANA media types - type/subtype - Identify formats of component resources or packaged content, rather than multimedia as a general concept.
- Which of these identifiers and schemes hold for the sense of multimedia this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- ISO/IEC 14496 (MPEG-4), issued by ISO and IEC, standardizes coding of audiovisual objects and associated multimedia functions.
- Synchronized Multimedia Integration Language (SMIL), a W3C Recommendation, specifies timing and coordination of multimedia presentations.
- Web Content Accessibility Guidelines (WCAG), issued by W3C, include accessibility requirements relevant to web multimedia, including captions and audio description.
- Which of these standards and regulation hold for the sense of multimedia this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Education and interactive training
- Entertainment and games
- Journalism and documentary storytelling
- Advertising and product demonstrations
- Museum exhibits and public information installations
- Which of these real-world use hold for the sense of multimedia this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Unsupported codecs or formats prevent components from playing.
- Timing errors cause audio, video, captions or animation to lose synchronization.
- Insufficient bandwidth or processing capacity causes buffering, dropped frames or reduced quality.
- Missing captions, descriptions or accessible controls exclude users.
- Flashing visual content can trigger seizures in susceptible viewers.
- Which of these failure modes and hazards hold for the sense of multimedia this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Language, writing direction and cultural conventions affect localization.
- Accessibility and content obligations vary by jurisdiction and delivery context.
- Which of these regional variation hold for the sense of multimedia this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Multimedia system - A system is the hardware and software that creates, processes or presents multimedia; multimedia denotes the combined content or communication mode.
- Hypermedia - Hypermedia organizes media through navigable links; multimedia need not offer linked navigation.
- Interactive media - Interactive media responds to user input; multimedia can follow a fixed sequence without interaction.
- Audiovisual media - Audiovisual media concerns sound and visual material specifically; multimedia also encompasses combinations such as text and still images.
- Mixed-media art - Mixed-media art combines artistic materials or techniques, whereas multimedia concerns coordinated media forms, although works can qualify as both.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of multimedia this model covers, and on what evidence? provenance
What the second pass must settle
- Does vr.tr.multimedia denote combined media content, a physical multimedia product or multimedia equipment, and what evidence explains its PHY / PHY.OBJ placement?
- Does an existing Vercy world model already cover this sense of multimedia and therefore provide the authoritative model to link?
- Which inclusion rule should settle boundary cases such as audiovisual video, illustrated documents and collections of otherwise unrelated assets?
- Which authoritative references and applicable standards should ground timing, accessibility and preservation criteria for the intended multimedia subtypes?
- How should generative, live and adaptive multimedia presentations be identified when their component set or sequence changes during use?