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Ogg - Just Solve the File Format Problem

Ogg

From Just Solve the File Format Problem
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File Format
Name Ogg
Ontology
Extension(s) .ogg, .ogx, .ogv, .oga, .spx, .ogm, .opus
MIME Type(s) application/ogg, audio/ogg, video/ogg
LoCFDD fdd000026
PRONOM fmt/944
Kaitai Struct Spec ogg.ksy
Released 1993

Ogg is a multimedia container format, most commonly used with Vorbis and other codecs developed by the Xiph.Org Foundation.

Although the initial specification and IANA registration called for the .ogg extension and application/ogg MIME type, regardless of the type of media in the container, the September 2008 RFC 5334 changed that recommendation and registered audio/ogg and video/ogg MIME types with corresponding .oga and .ogv extensions for content that is primarily audio or video respectively. The .ogx extension was introduced for use with content that incorporated the Ogg Skeleton and for which application/ogg remained appropriate. The .ogg extension was grandfathered to refer to Ogg audio with a Vorbis audio encoding. The .spx extension should be used for an Ogg audio file using the Speex codec.

Because Ogg formats are free and open-source, not proprietary as many other formats are, they are preferred by many "free-media" projects including Wikipedia, but this causes some issues for people attempting to view/listen to them, since some devices (e.g., Apple's iOS devices) don't support the Ogg formats, and others (e.g., Windows PCs) don't have "out-of-the-box" support until you install codecs, plug-ins, or software for it. Some of the proprietary formats have wider support in consumer devices in their default configurations.

Contents

Related formats

Streams that can be placed in Ogg

Identification

Ogg files start with the magic number "OggS".

In rare cases, this signature may be preceded by an ID3v2 segment; see ID3#Identification.

Specifications

Software

Utilities

Sample files

Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox

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