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Adobe Media Server has support for including multiple language
tracks for HTTP video streams, without requiring duplication and
repackaging of the video for each audio track. This feature, called
as “late” binding of audio tracks allow content providers to easily
provide multiple language tracks for a given video asset, at any
time before or after the asset’s initial packaging. The initial packaging
of the video asset can include an audio track, and the publisher
can still choose to provide one or more additional audio tracks
for the video. Video players can provide support for allowing the
viewers to switch between audio tracks either before or during playback.
The primary use case of this feature is that content providers
can publish video content in multiple languages. Viewers can subscribe
to such videos using the OSMF player, which allows audio track switching
before or during playback.
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