RFC 1890

Network Working Group
Request for Comments: 1890
Category: Standards Track

Audio-Video Transport Working Group
H. Schulzrinne
GMD Fokus
January 1996

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 Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Abstract

This memo describes a profile for the use of the real-time transport protocol (RTP), version 2, and the associated control protocol, RTCP, within audio and video multiparticipant conferences with minimal control. It provides interpretations of generic fields within the RTP specification suitable for audio and video conferences. In particular, this document defines a set of default mappings from payload type numbers to encodings.

The document also describes how audio and video data may be carried within RTP. It defines a set of standard encodings and their names when used within RTP. However, the encoding definitions are independent of the particular transport mechanism used. The descriptions provide pointers to reference implementations and the detailed standards. This document is meant as an aid for implementors of audio, video and other real-time multimedia applications.

Table of Content

• 1. Introduction
• 2. RTP and RTCP Packet Forms and Protocol Behavior
• 3. Registering Payload Types
• 4. Audio
  • 4.1 Encoding-Independent Recommendations
  • 4.2 Guidelines for Sample-Based Audio Encodings
  • 4.3 Guidelines for Frame-Based Audio Encodings
  • 4.4 Audio Encodings
    • 4.4.1 1016
    • 4.4.2 DVI4
    • 4.4.3 G721
    • 4.4.4 G722
    • 4.4.5 G728
    • 4.4.6 GSM
    • 4.4.7 L8
    • 4.4.8 L16
    • 4.4.9 LPC
    • 4.4.10 MPA
    • 4.4.11 PCMA
    • 4.4.12 PCMU
    • 4.4.13 VDVI
• 5. Video
  • 5.1 CelB
  • 5.2 JPEG
  • 5.3 H261
  • 5.4 MPV
  • 5.5 MP2T
  • 5.6 nv
• 6. Payload Type Definitions
• 7. Port Assignment
• 8. Bibliography
• 9. Security Considerations
• 10. Acknowledgements
• 11. Author's Address
• Current Locations of Related Resources

• Original text document
• Complete HTML RFC (TAR, TGZ, or ZIP format)

Dies ist ein Mirror von Connected: An Internet Encyclopedia von Brent Baccala. Die offizielle Projekt-Homepage findet sich im Web unter www.freesoft.org/CIE. Dieser Mirror wurde zuletzt aktualisiert am Samstag, 28 Januar 2006 18:17 +0100.