Underscore ("_"), and forward slash ("/"). The Codec ID Suffix MUST be composed of only capital letters (A-Z), numbers (0-9), The Major Codec ID MUST be composed of only capital letters (A-Z) and numbers (0-9). If a Codec ID Suffix is used, then the Codec ID MUST include aįorward slash ("/") as a separator between the Major Codec ID and the Codec ID Suffix. All characters of a Codec ID Prefix MUST beĬapital letters (A-Z) except for the last character of a Codec ID Prefix which MUST beĮach Codec ID MUST include a Major Codec ID immediately following the Codec ID Prefix.Ī Major Codec ID MAY be followed by an OPTIONAL Codec ID Suffix to communicate a refinement Codec IDĮach codec supported for storage in Matroska MUST have a unique Codec ID.Įach Codec ID MUST be prefixed with the string from the following table according to Support for a codec is defined in Matroska with the following values. Us on our development mailing list (cellar at ). If you feel we missed support for a very important codec, please tell Need a well defined Codec ID so that all developers supporting Matroska will use the The intention behind this list is not to list all existing audio and video codecs,īut rather to list those codecs that are currently supported in Matroska and therefore In order to provide its decoder with context and technical metadata. Certain encodings MAY also require some form of codec initialization This Codec ID is a unique registered identifier that represents the encoding stored within A Codec Mapping is a set of attributes to identify, name, and contextualize the formatĪnd characteristics of encoded data that can be contained within Matroska Clusters.Įach TrackEntry used within Matroska MUST reference a defined Codec Mapping using theĬodec ID to identify and describe the format of the encoded data in its associated Clusters.
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