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What is an audio format?

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Anonymous

12y ago
Updated: 11/24/2022

Ogg is a free, open standard container format maintained by the Xiph.Org Foundation. The creators of the Ogg format claim[dubious - discuss] that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high quality digital multimedia.

The name 'Ogg' refers to the file format which can multiplex a number of separate independent free and open source codecs for audio, video, text (such as subtitles), and metadata.

In the Ogg multimedia framework, Theora provides a lossy video layer, while the music-oriented Vorbis codec most commonly acts as the audio layer. The human speech compression codec Speex, lossless audio compression codec FLAC, and OggPCM may also act as audio layers.

The term 'Ogg' is commonly used to refer to audio file format Ogg Vorbis, that is, Vorbis-encoded audio in the Ogg container. Previously, the .ogg file extension was used for any content distributed within Ogg, but as of 2007, the Xiph.Org Foundation requests that .ogg be used only for Vorbis due to backward compatibility concerns. The Xiph.Org Foundation decided to create a new set of file extensions and media types to describe different types of content such as .oga for audio only files, .ogv for video with or without sound (including Theora), and .ogx for applications.[3]

The current version of the Xiph.Org Foundation's reference implementation, released on June 23, 2009, is libogg 1.1.4.[1] Another version, libogg2, has been in development, but is awaiting a rewrite as of 2008.[4] Both software libraries are free software, released under the new BSD license. Ogg reference implementation was separated from Vorbis on September 2, 2000.[5]

Because the format is free, and its reference implementation is non-copylefted, Ogg's various codecs have been incorporated into a number of different free and proprietary media players, both commercial and non-commercial, as well as portable media players and GPS receivers from different manufacturers.

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Vilma Hirthe

Lvl 10
2y ago

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