Invention Grant
- Patent Title: Systems and methods for playing back alternative streams of protected content protected using common cryptographic information
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Application No.: US15481340Application Date: 2017-04-06
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Publication No.: US10244272B2Publication Date: 2019-03-26
- Inventor: Michael George Kiefer , Eric William Grab , Jason Braness
- Applicant: DIVX, LLC
- Applicant Address: US CA San Diego
- Assignee: DIVX, LLC
- Current Assignee: DIVX, LLC
- Current Assignee Address: US CA San Diego
- Agency: KPPB LLP
- Main IPC: H04L29/06
- IPC: H04L29/06 ; H04N21/2347 ; H04L9/08 ; H04L9/32 ; H04N21/647 ; H04N21/254 ; H04N21/4408 ; H04N21/4627 ; H04N21/6334 ; H04L9/14

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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