H.264
E53638
H.264 is a widely used video compression standard known for delivering high-quality video at relatively low bitrates, commonly employed in streaming, broadcasting, and video recording.
All labels observed (14)
| Label | Occurrences |
|---|---|
| H.264 canonical | 24 |
| MPEG-4 AVC | 5 |
| ITU-T Recommendation H.264 | 3 |
| H.264/AVC | 2 |
| MPEG-4 Part 10 | 2 |
| Advanced Video Coding | 1 |
| H.264 / MPEG-4 AVC | 1 |
| H.264 encoders | 1 |
| H.264/AVC standard | 1 |
| H.264/AVC video compression standard | 1 |
| H.264/MPEG-4 AVC | 1 |
| High 4:4:4 Predictive Profile | 1 |
| ISO/IEC 14496-10 | 1 |
| ITU-T H.264 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T425482 — 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: H.264 Context triple: [Apple M2, supportsVideoCodec, H.264]
-
A.
Blu-ray Disc format
The Blu-ray Disc format is a high-definition optical disc technology used for storing and playing back HD and Ultra HD video and large amounts of digital data.
-
B.
SMPTE ST 2022
SMPTE ST 2022 is a family of standards from the Society of Motion Picture and Television Engineers that defines the transport of professional audio, video, and ancillary data over IP networks, including methods for encapsulation, error correction, and redundancy.
-
C.
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.
-
D.
ATSC
ATSC (Advanced Television Systems Committee) is a digital television broadcasting standard used primarily in North America for over-the-air high-definition TV transmission.
-
E.
TIFF
TIFF is the non-profit cultural organization that runs the Toronto International Film Festival and related year-round film programs and events.
- 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: H.264 Target entity description: H.264 is a widely used video compression standard known for delivering high-quality video at relatively low bitrates, commonly employed in streaming, broadcasting, and video recording.
-
A.
Blu-ray Disc format
The Blu-ray Disc format is a high-definition optical disc technology used for storing and playing back HD and Ultra HD video and large amounts of digital data.
-
B.
SMPTE ST 2022
SMPTE ST 2022 is a family of standards from the Society of Motion Picture and Television Engineers that defines the transport of professional audio, video, and ancillary data over IP networks, including methods for encapsulation, error correction, and redundancy.
-
C.
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.
-
D.
ATSC
ATSC (Advanced Television Systems Committee) is a digital television broadcasting standard used primarily in North America for over-the-air high-definition TV transmission.
-
E.
TIFF
TIFF is the non-profit cultural organization that runs the Toronto International Film Festival and related year-round film programs and events.
- F. None of above. chosen
Statements (85)
| Predicate | Object |
|---|---|
| instanceOf |
MPEG-4 AVC
ⓘ
video codec ⓘ video compression standard ⓘ |
| abbreviationOf |
H.264
self-linksurface differs
ⓘ
surface form:
ISO/IEC 14496-10
H.264 self-linksurface differs ⓘ
surface form:
ITU-T Recommendation H.264
|
| alsoKnownAs |
H.264
ⓘ
surface form:
MPEG-4 AVC
H.264 ⓘ
surface form:
MPEG-4 Part 10
|
| bitDepthSupport |
10-bit
ⓘ
8-bit ⓘ |
| colorSamplingSupport |
4:2:0
ⓘ
4:2:2 ⓘ 4:4:4 ⓘ |
| commonlyUsedIn |
Vimeo (historically, prior to spin-off)
ⓘ
surface form:
Vimeo
YouTube ⓘ digital television broadcasting ⓘ mobile video recording ⓘ video streaming services ⓘ |
| containerFormat |
AVI
ⓘ
MP4 ⓘ MPEG-TS ⓘ Matroska ⓘ QuickTime ⓘ |
| designGoal |
good video quality at low bitrates
ⓘ
higher compression efficiency than MPEG-2 ⓘ |
| developedBy | Joint Video Team ⓘ |
| fileExtension |
.avi
ⓘ
.m4v ⓘ .mkv ⓘ .mov ⓘ .mp4 ⓘ .ts ⓘ |
| firstStandardizedIn | 2003 ⓘ |
| fullName |
H.264
self-linksurface differs
ⓘ
surface form:
Advanced Video Coding
|
| hasEntropyCodingMode |
CABAC
ⓘ
CAVLC ⓘ |
| hasLevel |
Level 1
ⓘ
Level 1.1 ⓘ Level 1.2 ⓘ Level 1.3 ⓘ Level 2 ⓘ Level 3 ⓘ Level 3.1 ⓘ Level 4 ⓘ Level 4.1 ⓘ Level 4.2 ⓘ Level 5 ⓘ Level 5.1 ⓘ Level 5.2 ⓘ |
| hasProfile |
Baseline Profile
ⓘ
Extended Profile ⓘ High 10 Profile ⓘ High 4:2:2 Profile ⓘ H.264 self-linksurface differs ⓘ
surface form:
High 4:4:4 Predictive Profile
High Profile ⓘ Main Profile ⓘ |
| optimizedFor |
high-definition video
ⓘ
low bitrate video ⓘ |
| predecessor | H.263 ⓘ |
| standardizedBy |
ISO/IEC
ⓘ
ITU Telecommunication Standardization Sector ⓘ
surface form:
ITU-T
|
| successor |
H.265
ⓘ
H.265 ⓘ
surface form:
HEVC
|
| supports |
B-frames
ⓘ
CABAC entropy coding ⓘ CAVLC entropy coding ⓘ constant bitrate encoding ⓘ deblocking filter ⓘ inter-frame prediction ⓘ interlaced video ⓘ intra-frame prediction ⓘ multiple reference frames ⓘ progressive video ⓘ quarter-pixel motion compensation ⓘ variable bitrate encoding ⓘ |
| supportsResolutionUpTo |
4096x2304
ⓘ
4K class resolutions ⓘ |
| usedFor |
Blu-ray Disc video
ⓘ
broadcast television ⓘ internet video distribution ⓘ video conferencing ⓘ video recording ⓘ video streaming ⓘ |
| usedInStandard |
ATSC broadcasting standards
ⓘ
Blu-ray Disc format ⓘ
surface form:
Blu-ray Disc specification
DVB broadcasting standards ⓘ |
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: H.264 Description of subject: H.264 is a widely used video compression standard known for delivering high-quality video at relatively low bitrates, commonly employed in streaming, broadcasting, and video recording.
Referenced by (45)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Blu-ray Disc
this entity surface form:
H.264/AVC
this entity surface form:
MPEG-4 Part 10
this entity surface form:
MPEG-4 AVC
this entity surface form:
ITU-T Recommendation H.264
this entity surface form:
ISO/IEC 14496-10
this entity surface form:
High 4:4:4 Predictive Profile
this entity surface form:
MPEG-4 AVC
subject surface form:
Saorview
this entity surface form:
MPEG-4 AVC
this entity surface form:
ITU-T Recommendation H.264
subject surface form:
MCU (multipoint control unit)
this entity surface form:
MPEG-4 Part 10
subject surface form:
MPEG-4 Part 10
this entity surface form:
H.264/MPEG-4 AVC
this entity surface form:
H.264/AVC
this entity surface form:
ITU-T Recommendation H.264
this entity surface form:
H.264/AVC video compression standard
this entity surface form:
MPEG-4 AVC
subject surface form:
TNT (French digital terrestrial television)
this entity surface form:
MPEG-4 AVC
this entity surface form:
H.264 / MPEG-4 AVC