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draft-moffitt-videocodec-requirements.txt
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Network Working Group J. Moffitt
Internet-Draft Mozilla
Intended status: Informational November 10, 2014
Expires: May 14, 2015
Video Codec Requirements
draft-moffitt-videocodec-requirements-latest
Abstract
This document provides specific requirements for an Internet video
codec. These requirements address quality, bit-rate, and packet-loss
robustness, as well as other desirable properties.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on May 14, 2015.
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Moffitt Expires May 14, 2015 [Page 1]
Internet-Draft Video Codec Requirements November 2014
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Applications . . . . . . . . . . . . . . . . . . . . . . . . 2
4. Constraints Imposed by the Internet on the Codec . . . . . . 2
5. Detailed Basic Requirements . . . . . . . . . . . . . . . . . 2
6. Additional Considerations . . . . . . . . . . . . . . . . . . 3
7. Security Considerations . . . . . . . . . . . . . . . . . . . 3
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
2. Definitions
3. Applications
The following applications should be considered for Internet video
codecs, along with their requirements:
o Point-to-point calls
o Broadcast
o Conferencing
o Telepresence
o Teleoperation
o Screencasting
o In-game video chat
o Video storage
o Other applications
4. Constraints Imposed by the Internet on the Codec
5. Detailed Basic Requirements
o variable frame rate
o variable resolution
o any resolution from 1x1 to 4k?
Moffitt Expires May 14, 2015 [Page 2]
Internet-Draft Video Codec Requirements November 2014
o 8bit to 12bit
o loss robustness
o loss concealment?
o error recovery
o 420, 444, 422
o color spaces: req 709 and 2020
o alpha plane
o parallelism considerations (entropy coder in spearate thread,
wavefront parallel, etc)
o hardware feasibility
o software feasibility
explicit non-requirements:
o multiview
o svc
o bit-error robustness
6. Additional Considerations
The features described in this section are potentially desirable but
are not part of the strict requirements. The benefits of them should
be weighed against their costs before including them in the codec.
o lossless
o RGB mode
o aux planes (depth, etc)
7. Security Considerations
Although this document itself does not have security considerations,
this section describes the security requirements for the codec.
_todo_
Moffitt Expires May 14, 2015 [Page 3]
Internet-Draft Video Codec Requirements November 2014
Author's Address
Jack Moffitt
Mozilla
Email: [email protected]
Moffitt Expires May 14, 2015 [Page 4]