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H.263 is a video compression standard originally designed as a low-bit-rate compressed format for videotelephony. It was standardized by the ITU-T Video Coding Experts Group (VCEG) in a project ending in 1995/1996. It is a member of the H.26x family of video coding standards in the domain of the ITU-T.
Nokia. R. Even, Ed. Polycom. January 2007. RTP Payload Format for ITU-T Rec. H.263 Video . Status of This Memo. This document specifies an Internet standards track protocol for the. Internet community, and requests discussion and suggestions for. improvements. Please refer to the current edition of the "Internet.
- Joerg Ott, Stephan Wenger, Gary Sullivan, Roni Even
- 2007
Dec 14, 2021 · ITU-T Recommendation H.263 is titled Video Coding for Low Bit Rate Communication. This recommendation offers improved compression performance relative to H.261, MPEG-1, and MPEG-2. The H.263 standard contains a baseline mode of operation that supports only the most basic features of H.263.
H.263 (02/98) Video coding for low bit rate communication. Superseded. H.263 Annex U (11/00) Enhanced reference picture selection mode. Superseded. H.263 Annex V (11/00) Data-partitioned slice mode. Superseded.
H.263 is a hybrid coder that is based on 8 × 8 block DCT and 16 × 16/8 × 8 motion compensation with half-pel resolution. In H.263, the source video formats are fixed as the following five – SubQCIF/QCIF/CIF/4CIF/16CIF. There are three frame types – I, P and PB. MBs in I are all Intra-coded, while MBs in P are either Intra- or Inter-coded.
H263P: H.263+ / H.263-1998 / H.263 version 2. MSMPEG4v3: MPEG-4 part 2 Microsoft variant version 3. MSMPEG4v2: MPEG-4 part 2 Microsoft variant version 2. WMV2:
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In 1998 the ITU approved a new version of H.263 [H263P] that is also known as H.263 plus. This version added optional features, and a new payload format is now in RFC 2429 [RFC2429]. RFC 2429 is capable of carrying encoded video bit streams that are using only the basic H.263 version 1 options.
