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H.261

H.261 is an ITU-T video compression standard, first ratified in November 1988. It is the first member of the H.26x family of video coding standards in the domain of the ITU-T Study Group 16 Video Coding Experts Group (VCEG, then Specialists Group on Coding for Visual Telephony). It was the first video coding standard that was useful in practical terms.

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Committee
ITU-T Study Group 16 VCEG (then: Specialists Group on Coding for Visual Telephony)
Domain
video compression
Latest version
(03/93)
Organization
ITU-T, Hitachi, PictureTel, NTT, BT, Toshiba, etc.
Related standards
H.262, H.263, H.264, H.265, H.266, H.320, ISO/IEC 14496-2
Status
Published

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Overview

History

H.261 design

Software implementations

Patent holders

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Map overview Semantic statistics

H.261

Nodes74
Edges73
Triples61
Avg. degree1.97
Density0.027027
Components1

How this topic connects Entity context

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H.261

Top relations

related to Patent holders · 17
H.261 → AT, BT GroupToshibaKDDIAlcatelCompression Labs, Communication Industrial Co, CorporationGPT Data Systems, GEC, Graphics Communication Technologies, HitachiPictureTel Corp, Inc, Ltd, Mitsubishi ElectricFujitsuOrange, NECElectronics, Nippon Telegraph, NTT, PhilipsSonySharp CorporationOki Electric IndustryMatsushita, Telecommunications Research Institute, Telephone, The
related to history · 16
H.261 → CCITT, CCITT Study Group XV, Coding, DCT, DCT-based, DPCM, During, ITU-T, ITU-T SG16, NTT, Sakae Okubo, Since, Specialists Group, The, Visual Telephony, VQ
related to H.261 design · 11
H.261 → Ahmed, DCT, Each, Natarajan, Rao, Scalar, The, The DCT, Transform, Whilst, YCbCr
related to Software implementations · 5
H.261 → FFmpeg, It, MPlayer, The LGPL-licensed, VLC
related to External links · 2
H.261 → ITU, Video
Committee · 1
H.261 → ITU-T Study Group 16 VCEG (then: Specialists Group on Coding for Visual Telephony)
Domain · 1
H.261 → video compression
Latest version · 1
H.261 → (03/93)
Organization · 1
H.261 → ITU-T, Hitachi, PictureTel, NTT, BT, Toshiba, etc.
Related standards · 1
H.261 → H.262, H.263, H.264, H.265, H.266, H.320, ISO/IEC 14496-2

Important terminology Word statistics

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Important terminology

video 261 coding standard itu-t compression first luma chroma using design standards kbit ntt also study group visual dct still

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
H.261CommitteeITU-T Study Group 16 VCEG (then: Specialists Group on Coding for Visual Telephony)1.00infobox
H.261Domainvideo compression1.00infobox
H.261Latest version(03/93)1.00infobox
H.261OrganizationITU-T, Hitachi, PictureTel, NTT, BT, Toshiba, etc.1.00infobox
H.261Related standardsH.262, H.263, H.264, H.265, H.266, H.320, ISO/IEC 14496-21.00infobox
H.261StatusPublished1.00infobox
H.261SuccessorH.2621.00infobox
H.261Websitehttps://www.itu.int/rec/T-REC-H.2611.00infobox
H.261Year started19881.00infobox
H.261is aITU-T video compression standard0.90text
H.261related to External linksVideo0.60section
H.261related to External linksITU0.60section

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