RFC 4421 · PROPOSED STANDARD · 2006
WED · 29 JUL 2026
RTP Payload Format for Uncompressed Video: Additional Colour Sampling Modes
Overview
RFC 4421, “RTP Payload Format for Uncompressed Video: Additional Colour Sampling Modes”, is a Proposed Standard document published in February 2006 by C. Perkins. It updates RFC 4175. The canonical text is published by the RFC Editor.
Abstract
The RFC Payload Format for Uncompressed Video, RFC 4175, defines a scheme to packetise uncompressed, studio-quality, video streams for transport using RTP. This memo extends the format to support additional colour sampling modes. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 4421 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2006
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- RFC 4422 Simple Authentication and Security Layer
- RFC 4419 Diffie-Hellman Group Exchange for the Secure Shell Transport Layer Protocol
- RFC 4423 Host Identity Protocol Architecture
- RFC 4418 UMAC: Message Authentication Code using Universal Hashing
- RFC 4424 Real-Time Transport Protocol Payload Format for the Variable- Rate Multimode Wideband Extension Audio Codec
- RFC 4417 Report of the 2004 IAB Messaging Workshop
- RFC 4425 RTP Payload Format for Video Codec 1