RTP Payload Format for DV (IEC 61834) Video
RFC 3189

Document Type RFC - Proposed Standard (January 2002; Errata)
Obsoleted by RFC 6469
Last updated 2013-03-02
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Network Working Group                                       K. Kobayashi
Request for Comments: 3189             Communication Research Laboratory
Category: Standards Track                                       A. Ogawa
                                                         Keio University
                                                               S. Casner
                                                           Packet Design
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                            January 2002

              RTP Payload Format for DV (IEC 61834) 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
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.


   This document specifies the packetization scheme for encapsulating
   the compressed digital video data streams commonly known as "DV" into
   a payload format for the Real-Time Transport Protocol (RTP).

1. Introduction

   This document specifies payload formats for encapsulating both
   consumer- and professional-use DV format data streams into the Real-
   time Transport Protocol (RTP), version 2 [6].  DV compression audio
   and video formats were designed for helical-scan magnetic tape media.
   The DV standards for consumer-market devices, the IEC 61883 and 61834
   series, cover many aspects of consumer-use digital video, including
   mechanical specifications of a cassette, magnetic recording format,
   error correction on the magnetic tape, DCT video encoding format, and
   audio encoding format [1].  The digital interface part of IEC 61883
   defines an interface on an IEEE 1394 network [2,3].  This
   specification set supports several video formats: SD-VCR (Standard
   Definition), HD-VCR (High Definition), SDL-VCR (Standard Definition -
   Long), PALPlus, DVB (Digital Video Broadcast) and ATV (Advanced
   Television).  North American formats are indicated with a number of
   lines and "/60", while European formats use "/50".  DV standards

Kobayashi, et al.           Standards Track                     [Page 1]
RFC 3189      RTP Payload Format for DV (IEC 61834) Video   January 2002

   extended for professional use were published by SMPTE as 306M and
   314M, for different sampling systems, higher color resolution, and
   faster bit rates [4,5].

   There are two kinds of DV, one for consumer use and the other for
   professional.  The original "DV" specification designed for
   consumer-use digital VCRs is approved as the IEC 61834 standard set.
   The specifications for professional DV are published as SMPTE 306M
   and 314M.  Both encoding formats are based on consumer DV and used in
   SMPTE D-7 and D-9 video systems.  The RTP payload format specified in
   this document supports IEC 61834 consumer DV and professional SMPTE
   306M and 314M (DV-Based) formats.

   IEC 61834 also includes magnetic tape recording for digital TV
   broadcasting systems (such as DVB and ATV) that use MPEG2 encoding.
   The payload format for encapsulating MPEG2 into RTP has already been
   defined in RFC 2250 [7] and others.

   Consequently, the payload specified in this document will support six
   video formats of the IEC standard: SD-VCR (525/60, 625/50), HD-VCR
   (1125/60, 1250/50) and SDL-VCR (525/60, 625/50), and six of the SMPTE
   standards: 306M (525/60, 625/50), 314M 25Mbps (525/60, 625/50) and
   314M 50Mbps (525/60, 625/50).  In the future it can be extended into
   other high-definition formats.

   Throughout this specification, we make extensive use of the
   terminology of IEC and SMPTE standards.  The reader should consult
   the original references for definitions of these terms.

1.1 Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   document are to be interpreted as described in RFC 2119 [8].

2. DV format encoding

   The DV format only uses the DCT compression technique within each
   frame, contrasted with the interframe compression of the MPEG video
   standards [9,10].  All video data, including audio and other system
   data, are managed within the picture frame unit of video.

   The DV video encoding is composed of a three-level hierarchical
   structure.  A picture frame is divided into rectangle- or clipped-
   rectangle-shaped DCT super blocks.  DCT super blocks are divided into
   27 rectangle- or square-shaped DCT macro blocks.

Kobayashi, et al.           Standards Track                     [Page 2]
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