| 摘要 |
A method for providing streamed media to client devices (130-134) includes providing (202), for a client device (130-134), a variant playlist file (120) that identifies a plurality of variant streams (122-126), each corresponding to a different encoding of the same presentation but each presenting the same content having the same duration, and receiving (204), from the client device (130-134), a first request to provide a first set of identifiers that directs the first client device (130-134) to a first set of media segments from a first variant stream (122-126) of the plurality of variant streams (122-126) in the variant playlist file (120), wherein the first set of media segments corresponds to a first encoding. The method further includes, responsive to the first request, providing (206) a second set of identifiers that directs the client device (130-134) to a second set of media segments, which corresponds to a second encoding, to use in downloading a first portion of the content. |
