{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.wm-med-007","code":"wm-med-007-broadcast-stream","url":"https://ver.cy/models/wm-med-007-broadcast-stream/","name":"Broadcast / Stream","alternateNames":[],"kind":"world-model","status":"todo","version":"unversioned","language":"en","classifiers":{"family":"World Models","category":"Information and virtual systems","entryKind":"standalone-mm","plane":"","domain":["INF.MED.STR"],"industry":["Cross-industry"],"navPath":"NAV.INF.MED.STR","tags":["broadcast","stream","inf.med.str"],"facets":{}},"whatItIs":"A broadcast or stream is the scheduled or live distribution of audio or video content to an audience over a channel, such as a television or radio service, a live stream or a linear online channel. It covers the service, the schedule of programme events, the distribution path, and the measurement of reach and quality; the recorded content itself and its renditions are media assets described elsewhere.","purpose":"Scheduled/live distribution and measurement lifecycle","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["It is distribution in time, scheduled or live, not the stored content asset.","As-run records of what actually aired are separate from the planned schedule.","Audience measurement is part of its lifecycle, unlike a stored media file.","Distinct from a communication channel or online community, which is about interaction rather than one-to-many distribution."],"structure":{"bundles":[{"id":"MED007-B1","name":"Service and schedule","description":"What is distributed and when.","layers":[{"id":"MED007-B1-L1","name":"Service","description":"The channel or stream service with its operator and licence.","findings":[{"id":"MED007-F01","name":"Service identity","description":"The service has an operator, an identifier and any broadcast licence.","questions":[{"text":"Which operator runs the service, and under which licence if any?","id":"MED007-Q01"},{"text":"Which identifiers name the service on each platform?","id":"MED007-Q02"}]}]},{"id":"MED007-B1-L2","name":"Schedule","description":"Programme events planned and actually aired.","findings":[{"id":"MED007-F02","name":"As-run record","description":"Planned and actual start and end times are recorded per programme event.","questions":[{"text":"Which content aired at what time, according to the as-run log?","id":"MED007-Q03"},{"text":"Did the aired event differ from the published schedule?","id":"MED007-Q04"}]}]}]},{"id":"MED007-B2","name":"Distribution","description":"How the stream reaches the audience.","layers":[{"id":"MED007-B2-L1","name":"Distribution path","description":"Transmission, encoding and delivery networks.","findings":[{"id":"MED007-F03","name":"Delivery chain","description":"The stream names its encoders, transmission or delivery network and territories.","questions":[{"text":"Over which networks and in which territories is the stream delivered?","id":"MED007-Q05"},{"text":"Which territorial or rights restrictions apply to delivery?","id":"MED007-Q06"}]},{"id":"MED007-F04","name":"Service quality","description":"Availability, latency and technical quality of the delivered stream.","questions":[{"text":"Were outages or quality incidents recorded during the event?","id":"MED007-Q07"},{"text":"Did audio loudness and other technical parameters meet the delivery specification?","id":"MED007-Q08"}]}]}]},{"id":"MED007-B3","name":"Measurement and compliance","description":"Who watched or listened and whether rules were met.","layers":[{"id":"MED007-B3-L1","name":"Audience and obligations","description":"Audience measurement and regulatory obligations.","findings":[{"id":"MED007-F05","name":"Audience measure","description":"Audience figures name the measurement method and panel or census basis.","questions":[{"text":"Which audience figures exist, and from which measurement method?","id":"MED007-Q09"},{"text":"Are the figures panel estimates or server-side census counts?","id":"MED007-Q10"}]},{"id":"MED007-F06","name":"Content obligations","description":"Accessibility, advertising and content rules that apply.","questions":[{"text":"Which subtitle, audio description or advertising rules apply to the service?","id":"MED007-Q11"},{"text":"Was the content age-rated or flagged under content rules?","id":"MED007-Q12"}]}]}]}]},"agentConduct":{"may":["Publish schedules and programme metadata.","Monitor stream availability and technical quality.","Compile audience figures from cited measurement sources."],"mustNot":["Distribute a stream outside the territories or windows its rights allow.","Insert or alter content in a live broadcast without editorial authority.","Collect viewer data beyond what consent and law allow.","Inflate audience figures or present estimates as census counts.","Break an emergency alert or must-carry obligation."],"requiresHuman":["Editorial decisions on what airs, including live interruptions.","Responding to a regulator complaint or content ruling.","Taking a service off air."]},"ethics":{"considerations":["Broadcasts shape public opinion, so accuracy and editorial accountability matter.","Viewing data reveals interests and habits of identifiable households.","Accessibility services decide whether deaf, blind and other viewers can follow content."],"affectedParties":["Viewers and listeners","Broadcasters and stream operators","Rights holders and producers","Advertisers"]},"owners":{"steward":"A broadcaster or stream operator that holds editorial responsibility and any licence for the service.","roles":[],"masterSystems":["Broadcast scheduling and traffic system","Playout automation with as-run logs","Audience measurement database","Rights management system"]},"relations":[{"target":"WM-MED-002","type":"parent"}],"interaction":{"identity":{"applicability":"required","items":["A broadcast service is identified by operator-assigned service identifiers, such as DVB network, transport stream and service identifiers.","Programme content can carry identifiers such as EIDR or ISAN, and each aired event has an as-run record."]},"properties":{"applicability":"required","items":["Programme loudness in LUFS, measured to ITU-R BS.1770.","Bitrate in kilobits or megabits per second per rendition.","End-to-end latency in seconds for live streams.","Availability as a percentage of scheduled airtime."]},"recognition":{"applicability":"optional","items":["A broadcast is recognised by its service name, channel logo, schedule entry and delivery metadata.","Often confused with the recorded programme, the platform that hosts it or a single on-demand file."]},"capabilities":{"applicability":"required","items":["Content can be scheduled, played out and switched live.","Streams can be encoded in several renditions for adaptive delivery.","Reach and quality can be measured during and after the event."]},"hazards":{"applicability":"required","items":["Signal hijacking or unauthorised content insertion.","Rights breaches through delivery outside licensed territories.","Privacy breaches from fine-grained viewing data."]},"interfaces":{"applicability":"required","items":["DVB service information as specified in ETSI EN 300 468.","Adaptive streaming with MPEG-DASH or HLS.","EBU R 128 for loudness normalisation."]},"context":{"applicability":"required","items":["Used by broadcasters, streaming platforms and live event producers.","Licensed broadcasting is subject to media regulation and audiovisual service rules."]}},"sources":[{"title":"EBU R 128 Loudness normalisation and permitted maximum level of audio signals (European Broadcasting Union)"},{"title":"Recommendation ITU-R BS.1770 Algorithms to measure audio programme loudness and true-peak audio level (ITU)"},{"title":"Directive 2010/13/EU Audiovisual Media Services Directive (European Union)"}],"openQuestions":["Planned model: boundary questions, research and every section remain to be written."],"resources":{"spec":"https://ver.cy/models/wm-med-007-broadcast-stream/spec.yaml","agents":"https://ver.cy/models/wm-med-007-broadcast-stream/AGENTS.md"},"provenance":{"origin":"planned (registry candidate)","builtFrom":["models/runtime-index.json","ver-cy/world-models/card-supplements/wm-med-007-broadcast-stream.json"],"providers":[],"researchStatus":"todo","generatedAt":"","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_":"Planned entry, hidden from the catalogue until researched.","_supplement":"Sections authored in card supplement 1.0.0 by Claude (Opus 5.5) (2026-10-06, unreviewed). Written from the card's existing content and established practice in the field; no new sources were read. Unreviewed."},"score":1.0}}