Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The changeType() method of the SourceBuffer interface sets the MIME type that future calls to appendBuffer() should expect the new media data to conform to. This makes it possible to change codecs or container type mid-stream.
One scenario in which this is helpful is to support adapting the media source to changing bandwidth availability, by transitioning from one codec to another as resource constraints change.
