RFC 3189 (rfc3189) - Page 2 of 13
RTP Payload Format for DV (IEC 61834) Video
Alternative Format: Original Text Document
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", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this 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
