Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
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United States of America Patent
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Dec 9, 2014
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app pub date -
Dec 29, 2011
filing date -
Sep 1, 2011
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Abstract
Systems and methods for performing adaptive bitrate streaming using alternative streams of protected content in accordance with embodiments of the invention are described. One embodiment of the invention includes a processor, and memory containing a client application. In addition, the client application configures the processor to: request a top level index file identifying a plurality of alternative streams of protected content, where each of the alternative streams of protected content are encrypted using common cryptographic information; obtain the common cryptographic information; request portions of content from at least the plurality of alternative streams of protected content; access the protected content using the common cryptographic information; and playback the content.
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