ISO/IEC 23008-2
E423518
ISO/IEC 23008-2 is the international video coding standard better known as High Efficiency Video Coding (HEVC) or H.265, designed to provide significantly improved compression efficiency over its predecessors.
All labels observed (3)
| Label | Occurrences |
|---|---|
| ISO/IEC 23008 | 2 |
| ISO/IEC 23000-series and related MPEG systems standards | 1 |
| ISO/IEC 23008-2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4239009 — 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: ISO/IEC 23008-2 Context triple: [H.265, formalName, ISO/IEC 23008-2]
-
A.
ISO/IEC 14496-3
ISO/IEC 14496-3 is an international standard that specifies the audio coding technologies of MPEG-4, including Advanced Audio Coding (AAC) and related audio formats.
-
B.
ISO/IEC 13818-7
ISO/IEC 13818-7 is an international standard that specifies the Advanced Audio Coding (AAC) audio compression format used for efficient, high-quality digital audio.
-
C.
ISO/IEC 23272
ISO/IEC 23272 is an international standard in the joint ISO/IEC series that specifies technical requirements and guidelines in the field of information and communication technologies.
-
D.
SMPTE ST 2059
SMPTE ST 2059 is a professional media industry standard that defines how to use IEEE 1588 Precision Time Protocol to synchronize clocks and signals across IP-based audio, video, and broadcast systems.
-
E.
SMPTE ST 12
SMPTE ST 12 is a widely used SMPTE standard that defines timecode formats for synchronizing audio, video, and other media in film and television production.
- 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: ISO/IEC 23008-2 Target entity description: ISO/IEC 23008-2 is the international video coding standard better known as High Efficiency Video Coding (HEVC) or H.265, designed to provide significantly improved compression efficiency over its predecessors.
-
A.
ISO/IEC 14496-3
ISO/IEC 14496-3 is an international standard that specifies the audio coding technologies of MPEG-4, including Advanced Audio Coding (AAC) and related audio formats.
-
B.
ISO/IEC 13818-7
ISO/IEC 13818-7 is an international standard that specifies the Advanced Audio Coding (AAC) audio compression format used for efficient, high-quality digital audio.
-
C.
ISO/IEC 23272
ISO/IEC 23272 is an international standard in the joint ISO/IEC series that specifies technical requirements and guidelines in the field of information and communication technologies.
-
D.
SMPTE ST 2059
SMPTE ST 2059 is a professional media industry standard that defines how to use IEEE 1588 Precision Time Protocol to synchronize clocks and signals across IP-based audio, video, and broadcast systems.
-
E.
SMPTE ST 12
SMPTE ST 12 is a widely used SMPTE standard that defines timecode formats for synchronizing audio, video, and other media in film and television production.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation H.265
ⓘ
international standard ⓘ video coding standard ⓘ |
| abbreviation |
H.265
ⓘ
HEVC ⓘ
linked to:
H.265
|
| aimsTo | improve compression efficiency over H.264/AVC ⓘ |
| alsoKnownAs |
H.265
ⓘ
HEVC ⓘ
linked to:
H.265
High Efficiency Video Coding ⓘ
linked to:
H.265
|
| applicationDomain |
Ultra HD Blu-ray
ⓘ
linked to:
Blu-ray Disc format
broadcast television ⓘ internet video streaming ⓘ mobile video ⓘ video conferencing ⓘ |
| category |
MPEG standard
ⓘ
linked to:
MPEG
lossy video compression ⓘ |
| compressionEfficiency | approximately 50 percent bitrate reduction at similar quality compared to H.264/AVC ⓘ |
| defines |
bitstream syntax for HEVC
ⓘ
decoding process for HEVC ⓘ levels for HEVC ⓘ profiles for HEVC ⓘ tiers for HEVC ⓘ |
| developedBy |
ISO/IEC JTC 1/SC 29
ⓘ
JCT-VC ⓘ
linked to:
ITU-T Video Coding Experts Group
Joint Collaborative Team on Video Coding ⓘ |
| focusesOn | high efficiency video coding ⓘ |
| governingBody |
Moving Picture Experts Group
ⓘ
linked to:
MPEG
|
| jointlyStandardizedWith |
ITU-T H.265
ⓘ
linked to:
H.265
|
| partOfSeries |
ISO/IEC 23008
ⓘ
linked to:
ISO/IEC 23008-2
|
| predecessor |
Advanced Video Coding
ⓘ
ISO/IEC 14496-10 ⓘ ITU-T H.264 ⓘ
linked to:
H.264
|
| publishedBy |
International Electrotechnical Commission
ⓘ
International Organization for Standardization ⓘ |
| relatedStandard |
ISO/IEC 23008-1
ⓘ
ISO/IEC 23008-3 ⓘ MPEG-H ⓘ |
| supports |
4K UHD video
ⓘ
high dynamic range video ⓘ interlaced video coding tools (limited) ⓘ progressive scan video ⓘ resolutions up to 8K UHD ⓘ wide color gamut video ⓘ |
| uses |
Coding Tree Units
ⓘ
advanced motion compensation ⓘ asymmetric motion partitioning ⓘ in-loop deblocking filter ⓘ quadtree-based block partitioning ⓘ sample adaptive offset filter ⓘ transform skip ⓘ |
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: ISO/IEC 23008-2 Description of subject: ISO/IEC 23008-2 is the international video coding standard better known as High Efficiency Video Coding (HEVC) or H.265, designed to provide significantly improved compression efficiency over its predecessors.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: ISO/IEC 23008-2
linked to: ISO/IEC 23008-2
linked to: ISO/IEC 23008-2