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h.264video-encoding

what does 26 mean in h.264?


Whenever I searched about H.264, there is plenty information about video-encoding, media-container so forth, but why I can not find any effective source to explain what is meaning of 26 in H.26{1,2,3,4,5}?


Solution

  • Among other H.26x are H Series recommendations of ITU-T (ITU Telecommunication Standardization Sector), series on Audiovisual and multimedia systems.

    H.261 Video codec for audiovisual services at p x 64 kbit/s
    H.262 Information technology - Generic coding of moving pictures and associated audio information: Video
    H.263 Video coding for low bit rate communication
    H.Imp263 Implementors' Guide for ITU-T Recommendation H.263
    H.264 Advanced video coding for generic audiovisual services
    H.264.1 Conformance specification for ITU-T H.264 advanced video coding
    H.264.2 Reference software for ITU-T H.264 advanced video coding
    H.Imp264 Implementors' Guide for ITU-T Recommendation H.264
    H.265 High efficiency video coding
    H.265.1 Conformance specification for ITU-T H.265 high efficiency video coding
    H.265.2 Reference software for ITU-T H.265 high efficiency video coding

    However there are lot of others there so 26 alone does not have any special meaning.

    ITU-T Recommendations by series gives another view on how the recommendations are structured:

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