RFC 2029 (rfc2029) - Page 1 of 6
RTP Payload Format of Sun's CellB Video Encoding
Alternative Format: Original Text Document
Network Working Group M. Speer
Request for Comment: 2029 D. Hoffman
Category: Standards Track Sun Microsystems, Inc.
October 1996
RTP Payload Format of Sun's CellB Video Encoding
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 packetization scheme for the CellB video
encoding. The scheme proposed allows applications to transport CellB
video flows over protocols used by RTP. This document is meant for
implementors of video applications that want to use RTP and CellB.
1. Introduction
The Cell image compression algorithm is a variable bit-rate video
coding scheme. It provides "high" quality, low bit-rate image
compression at low computational cost. The bytestream that is
produced by the Cell encoder consists of instructional codes and
information about the compressed image.
For futher information on Cell compression technology, refer to [1].
Currently, there are two versions of the Cell compression technology:
CellA and CellB. CellA is primarily designed for the encoding of
stored video intended for local display, and will not be discussed in
this memo.
CellB, derived from CellA, has been optimized for network-based video
applications. It is computationally symmetric in both encode and
decode. CellB utilizes a fixed colormap and vector quantization
techniques in the YUV color space to achieve compression.
Speer & Hoffman Standards Track