Broadcast / Stream
Scheduled/live distribution and measurement lifecycle
Bundle → Layer → Finding → Questions Filled
3 bundles · 4 layers · 6 findings · 12 questions
Service and schedule What is distributed and when.
Service
The channel or stream service with its operator and licence.
Service identity
The service has an operator, an identifier and any broadcast licence.
- Which operator runs the service, and under which licence if any?
- Which identifiers name the service on each platform?
Schedule
Programme events planned and actually aired.
As-run record
Planned and actual start and end times are recorded per programme event.
- Which content aired at what time, according to the as-run log?
- Did the aired event differ from the published schedule?
Distribution How the stream reaches the audience.
Distribution path
Transmission, encoding and delivery networks.
Delivery chain
The stream names its encoders, transmission or delivery network and territories.
- Over which networks and in which territories is the stream delivered?
- Which territorial or rights restrictions apply to delivery?
Service quality
Availability, latency and technical quality of the delivered stream.
- Were outages or quality incidents recorded during the event?
- Did audio loudness and other technical parameters meet the delivery specification?
Measurement and compliance Who watched or listened and whether rules were met.
Audience and obligations
Audience measurement and regulatory obligations.
Audience measure
Audience figures name the measurement method and panel or census basis.
- Which audience figures exist, and from which measurement method?
- Are the figures panel estimates or server-side census counts?
Content obligations
Accessibility, advertising and content rules that apply.
- Which subtitle, audio description or advertising rules apply to the service?
- Was the content age-rated or flagged under content rules?
Classifiers Filled
- Family
- World Models
- Category
- Information and virtual systems
- Entry kind
- standalone-mm
- Navigation path
- NAV.INF.MED.STR
- Domain
- INF.MED.STR
- Industry
- Cross-industry
- Tags
- broadcaststreaminf.med.str
What it is Filled
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.
Why it exists Filled
Scheduled/live distribution and measurement lifecycle
Distinguishing features Filled
- 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.
What robots and AI may and may not do Filled
Must not
- 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.
Only with a human decision
- Editorial decisions on what airs, including live interruptions.
- Responding to a regulator complaint or content ruling.
- Taking a service off air.
May
- Publish schedules and programme metadata.
- Monitor stream availability and technical quality.
- Compile audience figures from cited measurement sources.
Moral aspects Filled
- 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.
Who is affected
- Viewers and listeners
- Broadcasters and stream operators
- Rights holders and producers
- Advertisers
Owners Filled
Steward
A broadcaster or stream operator that holds editorial responsibility and any licence for the service.
Master systems
- Broadcast scheduling and traffic system
- Playout automation with as-run logs
- Audience measurement database
- Rights management system
Links to other meta-models Filled
parent
- WM-MED-002
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- 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.
Direct properties required Filled
- 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 optional Filled
- 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 and actions required Filled
- 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 and failure modes required Filled
- Signal hijacking or unauthorised content insertion.
- Rights breaches through delivery outside licensed territories.
- Privacy breaches from fine-grained viewing data.
Standards and interfaces required Filled
- DVB service information as specified in ETSI EN 300 468.
- Adaptive streaming with MPEG-DASH or HLS.
- EBU R 128 for loudness normalisation.
Context of use required Filled
- Used by broadcasters, streaming platforms and live event producers.
- Licensed broadcasting is subject to media regulation and audiovisual service rules.
Sources Filled
- EBU R 128 Loudness normalisation and permitted maximum level of audio signals (European Broadcasting Union)
- Recommendation ITU-R BS.1770 Algorithms to measure audio programme loudness and true-peak audio level (ITU)
- Directive 2010/13/EU Audiovisual Media Services Directive (European Union)
Open questions
- Planned model: boundary questions, research and every section remain to be written.
Machine files
Provenance
planned (registry candidate) · todo
Built from: models/runtime-index.json, ver-cy/world-models/card-supplements/wm-med-007-broadcast-stream.json
Planned entry, hidden from the catalogue until researched.