RTP Timestamp Frequency for Variable Rate Audio Codecs
draft-ietf-avt-variable-rate-audio-00
| Document | Type | Expired Internet-Draft (avt WG) | |
|---|---|---|---|
| Last updated | 2004-10-19 | ||
| Stream | IETF | ||
| Intended RFC status | (None) | ||
| Formats |
Expired & archived
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| Stream | WG state | WG Document | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | Expired | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
https://www.ietf.org/archive/id/draft-ietf-avt-variable-rate-audio-00.txt
Abstract
This memo discusses the problems of audio codecs with variable external sampling rates. Historically, for audio codecs, the RTP timestamp frequency was chosen to match the sampling rate of the audio codec. However, this choice is nowadays more difficult to justify, because of the advent of audio codecs (and, even more important, practical use cases) that support multiple sample rates and the switch between the sample rates during the lifetime of an RTP session. This Internet draft addresses the problem by suggesting that RTP Payload RFCs for such codecs to utilize a single, high, unified RTP timestamp frequency.
Authors
Stephan Wenger
(stewe@stewe.org)
Colin Perkins
(csp@csperkins.org)
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)