|Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact|
|Full name||Matroska File Format with MP3 Audio Encoding|
Matroska file containing an audio essence encoded as MP3.
On the Matroska FAQ page (available via Internet Archive capture from December 5, 2013), the developers suggest reasons for wrapping MP3 encoding in Matroska. For example, they state that lyrics or transcriptions can be embedded in the audio file, that one may use chapters to separate parts of a track or a live album, adding that in some cases (MP3, AC3, DTS) "the Matroska file may also be smaller than the original with much better/cleaner seeking support." Regarding sources for captions or subtitles, the FAQ mentions the example of srt subtitle files, a format associated with the SubRip software application.
|Production phase||Generally a final-state (end-user delivery) format.|
|Relationship to other formats|
|Has subtype||Matroska, Matroska Multimedia Container|
|Contains||MP3_ENC, MP3 (MPEG Layer III Audio Encoding)|
|May contain||Video essences and other elements, in various encodings.|
|LC experience or existing holdings||None|
|Disclosure||Both Matroska and MP3 are open standards. Matroska is an offshoot of the Multimedia Container Format project. MP3 was developed by the Moving Picture Experts Group (MPEG), Coding of audio, picture, multimedia and hypermedia information.|
The Matroska specification is published online at https://www.matroska.org/technical/elements.html.
For MP3: (1) MPEG-1: ISO/IEC 11172-3. Information technology -- Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s -- Part 3: Audio. (2) MPEG-2: ISO/IEC 13818-3. Information technology -- Generic coding of moving pictures and associated audio information -- Part 3: Audio.
These MPEG specifications describe the syntax and semantics for three classes of compression methods known as Layers I, II, and III. MP3 is Layer III. See list of ISO documents in Format specifications below; see also MPEG-1 and MPEG-2.
|Adoption||Adoption is not known to the authors of this website. Comments Welcome|
|Licensing and patents||See Matroska and MP3|
|Transparency||See Matroska and MP3|
|Self-documentation||See Matroska and MP3|
|External dependencies||See Matroska and MP3|
|Technical protection considerations||See Matroska and MP3|
|Filename extension||See related format.||See Matroska.|