Accessibility/Video Codecs: Difference between revisions

Accessibility/Video Codecs (view source)

52 bytes added , 22 September 2008

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 == Choosing a Caption Format ==
-For a given container, you need to have a defined mapping for multiplexing a data stream for a given codec into the container. This mapping specification also needs to be supported by tools, frameworks, and applications - in particular video players.
+To encapsulate a data stream of a given codec into a container, you require a container-specific multiplexing rule (also called a "media mapping" in Ogg). The multiplexing rules need to be supported by tools, frameworks, and applications - in particular video players - for both, encoding and decoding.
 In theory, given a multiplexing rule, you can put any video codec and any captioning format in any container. However, multiplexing rules don't exist for all codec/container combinations.