Vorbis Audio Codec
Vorbis shares Ogg framing with Opus — understanding Vorbis header packets clarifies how Ogg-encapsulated telephony codecs are structured.
What It Defines
Open lossy audio codec typically stored in Ogg containers. Three header packets (identification, comment, setup) precede audio packets. MIME type: `audio/vorbis`. Largely replaced by Opus in VoIP but persists in legacy streaming.
Canonical (Normative)
Convenient (Practical)
Publishes web platform specs including CSS, accessibility, security policies, Service Workers, Web App Manifest, and many browser APIs. Also maintains some versioned HTML/DOM specs.
Related Specs
Opus-in-Ogg is an alternative to WebM/MP4 for VoIP recordings and Icecast streams. Page/chunk structure is a classic telephony streaming envelope pattern.
Opus is the codec for real-time audio on the internet. WebRTC mandates it; Discord, Zoom, and most VoIP apps use it. Understanding bitrate, FEC, and frame sizing directly impacts audio quality and bandwidth.
Speex is Opus's predecessor from Xiph.Org. Understanding Speex/Ogg framing helps maintain legacy VoIP and streaming integrations.