3.1.1.2 H.263 Payload Formats

The description in this section applies to the H.263 payload headers in both RFC mode and draft mode. An H.263 payload is carried within RTP packets; the Real-Time Transport Protocol (RTP/RTCP): Microsoft Extensions ([MS-RTPME] section 2.2.1) specifies how to identify packets containing H.263 payloads.

An H.263 video frame is fragmented and converted to packets using the mechanism specified in [RFC2190] and in this document.

An H.263 video frame is constructed by concatenating all H.263 video payload data of all RTP packets for the video frame.

H.263 video packets are considered to be complete if they satisfy the following condition:

  • An H.263 I-Frame SHOULD be sent every 15 seconds.

Note The above conceptual data can be implemented using a variety of techniques. An implementation is at liberty to implement such data in any way it pleases.