Description
Content distributors often use multiple Content Delivery Networks (CDNs) to
distribute their content to the end-users. They may upload a copy of their catalogue
to each CDN, or more commonly have all CDNs pull the content from a common
origin. Alternate URLs are generated, one for each CDN, that point at identical
content. DASH players may access alternate URLs in the event of delivery
problems.
Content steering describes a deterministic capability for a content
distributor to switch the content source that a player uses either at start-up or
midstream, by means of a remote steering service. The DASH implementation of
Content Steering also supports the notion of a proxy steering server which can
switch a mobile client between broadcast and unicast sources.
