CMML

CMML stands for Continuous Media Markup Language and is to audio or video what HTML is to text. CMML is essentially a timed text codec. It allows to structure a time-continuously sampled data file by dividing it into temporal sections (so-called clips) and provides these clips with some additional information. This information is HTML-like and is essentially a textual representation of the audio or video file. CMML enables textual searches on these otherwise binary files.

CMML is appropriate for use with all Ogg media formats, to provide subtitles and timed metadata.

Example of CMML Content

<cmml>
  <stream timebase="0">
    <import src="galaxies.ogv" contenttype="video/ogg"/>
  </stream>
  <head>
    <title>Hidden Galaxies</title>
    <meta name="author" content="CSIRO"/>
  </head>
  <clip id="findingGalaxies" start="15">
    <a href="http://www.aao.gov.au/galaxies.anx#radio">
      Related video on detection of galaxies
    </a>
    <img src="galaxy.jpg"/>
    <desc>What's out there?</desc>
    <meta name="KEYWORDS" content="Radio Telescope"/>
  </clip>
</cmml>

The origin of the CMML document, along with further documentation and standards can be found at Annodex CMML Standard Version 2.1

v • d • e Xiph.Org Foundation

Ogg Project	Vorbis · Theora · FLAC · Speex · Tremor · OggUVS · OggPCM · Ogg Writ

Other projects	XSPF · Annodex · Xiph QuickTime Components · cdparanoia · Icecast · IceShare

Related articles	Chris Montgomery · CMML · Ogg Media · Ogg page · Ogg Squish

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