Ogg

Ogg is an open multimedia container format that packages synchronized audio, video, and other data streams. It is independent of the codecs used to encode those streams.

Ogg page: A unit of Ogg bitstream structure that carries packet data, stream identification, and synchronization information. Pages divide an Ogg bitstream into pieces that can be parsed and synchronized.
Container format: A file format that packages encoded data streams and metadata, often with timing and synchronization information. Ogg belongs to this family of formats, rather than being an audio codec.
Ogg Vorbis: A lossy audio format pairing the Vorbis codec with Ogg encapsulation. It is the best-known audio use of the Ogg container.
Matroska: An open multimedia container format designed to hold video, audio, subtitles, and metadata. Matroska is a broader-featured open container often considered for similar media packaging.
Ogg bitstream framing: The rules for organizing packets into Ogg pages and identifying logical streams within a physical bitstream. Framing is the container machinery that lets Ogg carry streams without defining their codecs.
Codec: A method or software implementation for encoding and decoding digital data, including audio and video. Codecs determine how Ogg’s contained media is encoded and decoded.
Ogg Opus: A format that carries Opus-encoded audio in an Ogg container. It demonstrates Ogg’s use with a modern, low-latency audio codec.
MP4: A multimedia container format standardized as part of the MPEG-4 suite. MP4 is a widely used alternative container with a different ecosystem of codecs and tools.
Ogg logical bitstream: An independent coded stream within an Ogg file, identified by a serial number and composed of packets. A logical bitstream lets one Ogg file contain a distinct audio or video stream.
Media container: A file structure that stores one or more media streams together with related metadata. This broader packaging concept distinguishes Ogg’s role from the media streams it carries.

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