Media Source Extensions
E565064
Media Source Extensions is a W3C specification that enables web applications to generate and control media streams for playback via HTML5 video and audio elements, supporting features like adaptive streaming and dynamic content insertion.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Media Source Extensions canonical | 6 |
| HTMLMediaElement.srcObject with MediaSource | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6034409 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Media Source Extensions Context triple: [EdgeHTML, supportsStandard, Media Source Extensions]
-
A.
Media Resource Function
Media Resource Function is a network element in IP and IMS architectures that provides media-related processing such as announcements, conferencing, and media transcoding for communication services.
-
B.
Media Resource Function Processor
Media Resource Function Processor is a network element in IP multimedia systems responsible for handling and processing media-related tasks such as mixing, transcoding, and media stream manipulation.
-
C.
Media Resource Function Controller
Media Resource Function Controller is a control-plane component in IP multimedia and VoIP networks that manages and coordinates media processing resources such as conferencing, announcements, and media stream manipulation.
-
D.
Media Res
Media Res is a television and film production company best known for producing high-profile, prestige series for major streaming platforms.
-
E.
Core Contents Media
Core Contents Media was a South Korean entertainment company best known for managing popular K-pop acts before rebranding as MBK Entertainment.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Media Source Extensions Target entity description: Media Source Extensions is a W3C specification that enables web applications to generate and control media streams for playback via HTML5 video and audio elements, supporting features like adaptive streaming and dynamic content insertion.
-
A.
Media Resource Function
Media Resource Function is a network element in IP and IMS architectures that provides media-related processing such as announcements, conferencing, and media transcoding for communication services.
-
B.
Media Resource Function Processor
Media Resource Function Processor is a network element in IP multimedia systems responsible for handling and processing media-related tasks such as mixing, transcoding, and media stream manipulation.
-
C.
Media Resource Function Controller
Media Resource Function Controller is a control-plane component in IP multimedia and VoIP networks that manages and coordinates media processing resources such as conferencing, announcements, and media stream manipulation.
-
D.
Media Res
Media Res is a television and film production company best known for producing high-profile, prestige series for major streaming platforms.
-
E.
Core Contents Media
Core Contents Media was a South Korean entertainment company best known for managing popular K-pop acts before rebranding as MBK Entertainment.
- F. None of above. chosen
Statements (88)
| Predicate | Object |
|---|---|
| instanceOf |
HTML5 media API
ⓘ
W3C specification ⓘ browser API ⓘ web standard ⓘ |
| abbreviation | MSE ⓘ |
| apiSurface |
HTMLMediaElement.srcObject with MediaSource
ⓘ
linked to:
Media Source Extensions
MediaSource.addSourceBuffer() ⓘ MediaSource.endOfStream() ⓘ MediaSource.isTypeSupported() ⓘ MediaSource.removeSourceBuffer() ⓘ SourceBuffer.abort() ⓘ SourceBuffer.appendBuffer() ⓘ SourceBuffer.remove() ⓘ |
| category |
client-side streaming technology
ⓘ
web multimedia technology ⓘ |
| compatibleWith | JavaScript ⓘ |
| definesConcept |
append window
ⓘ
buffered ranges ⓘ end of stream ⓘ media segments ⓘ source buffers ⓘ |
| designedFor |
HTML5 audio elements
ⓘ
HTML5 video elements ⓘ web applications ⓘ |
| enables |
JavaScript control of media buffers
ⓘ
JavaScript-based media pipelines ⓘ custom streaming protocols over HTTP ⓘ playback of HLS-like streams ⓘ playback of MPEG-DASH ⓘ playback of WebM segments ⓘ playback of fragmented MP4 ⓘ playback of segmented media formats ⓘ |
| fullName | Media Source Extensions ⓘ |
| governs |
appending media segments to buffers
ⓘ
media duration changes ⓘ removing media data from buffers ⓘ signaling end of media stream ⓘ |
| hasConcept |
appendWindowEnd
ⓘ
appendWindowStart ⓘ buffered attribute of SourceBuffer ⓘ readyState of MediaSource ⓘ timestampOffset ⓘ |
| hasInterface |
MediaSource
ⓘ
MediaSourceHandle ⓘ SourceBuffer ⓘ SourceBufferList ⓘ TimeRanges ⓘ |
| hasPrimaryInterface | MediaSource ⓘ |
| hasVersion | MSE 1.0 ⓘ |
| partOf | Open Web Platform ⓘ |
| performanceConsideration |
buffer size management
ⓘ
memory usage of media buffers ⓘ |
| primaryUseCase |
online video platforms
ⓘ
over-the-top video services ⓘ streaming media playback in browsers ⓘ |
| relatedTo |
EME
ⓘ
Encrypted Media Extensions ⓘ HTML5 ⓘ HTMLAudioElement ⓘ
linked to:
HTMLMediaElement
HTMLMediaElement ⓘ HTMLVideoElement ⓘ |
| runsIn |
user agent
ⓘ
web browser ⓘ |
| securityConsideration |
CORS for media segments
ⓘ
interaction with Encrypted Media Extensions ⓘ |
| standardizedBy |
W3C
ⓘ
linked to:
World Wide Web Consortium
World Wide Web Consortium ⓘ |
| status | W3C Recommendation ⓘ |
| supportsFeature |
DVR-like functionality
ⓘ
ad insertion ⓘ adaptive bitrate streaming ⓘ adaptive streaming ⓘ buffer management ⓘ codec switching ⓘ dynamic content insertion ⓘ live streaming ⓘ low-latency streaming ⓘ seamless stream splicing ⓘ time-shifted playback ⓘ track switching ⓘ video on demand ⓘ |
| usedWith |
DASH.js
ⓘ
linked to:
MPEG-DASH
HLS ⓘ HTTP Live Streaming ⓘ MPEG-DASH ⓘ Shaka Player ⓘ hls.js ⓘ
linked to:
HLS
video.js ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Media Source Extensions Description of subject: Media Source Extensions is a W3C specification that enables web applications to generate and control media streams for playback via HTML5 video and audio elements, supporting features like adaptive streaming and dynamic content insertion.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Media Source Extensions