Format Description Categories
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Vorbis Audio Codec, Version I
Format Description Properties
- ID: fdd000109
- Short name: Vorbis_I
- Content categories:
- Format Category:
- Other facets:
unitary, binary, sampled
- Last significant FDD update:
- Draft status: Full
Identification and description
||Vorbis Audio Codec, Version I
||Bitstream encoding format designed for efficient distribution of waveform sound over moderate bandwidth connections; may be used at higher data rates for better fidelity. From an open source project. The Vorbis specification states: " . . . a general purpose perceptual audio CODEC intended to allow maximum encoder flexibility, thus allowing it to scale competitively over an exceptionally wide range of bitrates."
||Generally used for final-state, end-user delivery.
|Relationship to other formats
Ogg Vorbis Audio Format
|LC experience or existing holdings
||Fully documented. Developed by the Xiph.Org Foundation, a non-profit organization.
||Vorbis I specification. This version is dated February 3, 2010.
||Applications include streaming broadcasts ("oggcasts") and computer games. See also Ogg and Ogg_Vorbis
| Licensing and patents
|| For "file" metadata, see Ogg. Technical metadata is included in the Vorbis stream, as described in RFC 5215, RTP Payload Format for Vorbis Encoded Audio (2008)."
||For "file" metadata, see Ogg. Technical metadata is included in the Vorbis stream. This is described in the RTP Payload Format for Vorbis Encoded Audio. As of June, 2010, the August 2008 draft can be found at http://tools.ietf.org/html/rfc5215. Since this Web page may not be updated promptly, the link this IETF document is has not been embedded here.
||Surround sound requires appropriate amplifier and loudspeakers or headphone.
|Technical protection considerations
||None known to the compilers of this document.
Quality and functionality factors
|Fidelity (high audio resolution)
||From the specification: "At the high
quality/bitrate end of the scale (CD or DAT rate stereo, 16/24 bits) it is in the same league as MPEG-2 and MPC. Similarly, the 1.0 encoder can encode high-quality CD and DAT rate stereo at below
48kbps without resampling to a lower rate. Vorbis is also intended for lower and higher sample rates
(from 8kHz telephony to 192kHz digital masters). . . ."
||From the specification: Supports "a range of channel representations (monaural,
polyphonic, stereo, quadraphonic, 5.1, ambisonic, or up to 255 discrete channels)."
|Support for user-defined sounds, samples, and patches
|Functionality beyond normal rendering
||Not fully investigated for this page; may be streamed as raw data under RTP (Realtime Transport Protocol).
File type signifiers
|Internet Media Type
Monday, 16-Dec-2013 21:29:23 EST