# US 2024/0205281 A1 · Systems and Methods for Encoding and Sharing Content between Devices

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- Number: US 2024/0205281 A1
- Document ID: US20240205281A1
- Status: Published application
- Kind: A1
- Application number: 18/357,498
- Filed: 2023-07-24
- Published: 2024-06-20
- Earliest claimed: 2015-01-06
- Assignees: Divx, LLC
- Applicants: Divx, LLC
- Inventors: Song Cen; Reza Emdad
- Web page: https://patentgrep.com/patent/US20240205281A1

## CPC

- H04L 65/612: for unicast
- G06F 16/71: Indexing; Data structures therefor; Storage structures
- H04L 63/08: {for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32)}
- H04L 63/0807: {using tickets, e.g. Kerberos (cryptographic mechanisms or cryptographic arrangements for entity authentication using tickets or tokens H04L9/3213)}
- H04L 63/102: {Entity profiles}
- H04L 63/107: {wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals}
- H04L 65/70: Media network packetisation
- H04L 65/756: adapting media to device capabilities
- H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)}
- H04L 65/764: {at the destination (reformatting of additional data in video clients H04N21/4355)}
- H04L 69/24: Negotiation of communication capabilities
- H04N 21/2343: involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)}
- H04N 21/234309: {by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo (conversion of standards in analog television systems H04N7/01)}
- H04N 21/234327: {by decomposing into layers, e.g. base layer and one or more enhancement layers}
- H04N 21/234363: {by altering the spatial resolution, e.g. for clients with a lower screen resolution}
- H04N 21/23439: {for generating different versions}
- H04N 21/2347: involving video stream encryption
- H04N 21/2393: {involving handling client requests (scheduling or organising the servicing of application requests H04L67/60)}
- H04N 21/2402: {Monitoring of the downstream path of the transmission network, e.g. bandwidth available (traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876)}
- H04N 21/2541: {Rights Management (protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08)}
- H04N 21/25808: {Management of client data (terminal profiles in network data switching protocols H04L67/303)}
- H04N 21/25816: {involving client authentication (restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06)}
- H04N 21/25825: {involving client display capabilities, e.g. screen resolution of a mobile phone (optimising the visualisation of content during browsing in the Internet G06F16/9577; processing of terminal status or physical abilities in wireless networks H04W8/22; authentication in wireless network security H04W12/06)}
- H04N 21/25833: {involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities (allocation of resources considering hardware capabilities in multiprogramming arrangements G06F9/5044; allocation of resources considering software capabilities in multiprogramming arrangements G06F9/5055)}
- H04N 21/25841: {involving the geographical location of the client (retrieval from the Internet by querying based on geographical locations G06F16/9537; arrangements for identifying locations of receiving stations in broadcast systems H04H60/51; location of the user terminal in data switching networks H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00)}
- H04N 21/25858: {involving client software characteristics, e.g. OS identifier}
- H04N 21/25875: {involving end-user authentication (restricting access to computer systems by authenticating users using a predetermined code G06F21/33; arrangements for secret or secure communication including means for verifying the identity or authority of a user of the system H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06)}
- H04N 21/26258: {for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list (retrieval of multimedia data based on playlists G06F16/40)}
- H04N 21/2662: Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
- H04N 21/2743: Video hosting of uploaded data from client
- H04N 21/4126: {The peripheral being portable, e.g. PDAs or mobile phones}
- H04N 21/41407: {embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop (constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57)}
- H04N 21/43615: {Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals (home Audio Video Interoperability [HAVI] data switching networks H04L12/2805)}
- H04N 21/4402: involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)}
- H04N 21/440218: {by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 (conversion of standards in analogue television systems H04N7/01)}
- H04N 21/4516: {involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available}
- H04N 21/4621: {Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen (arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10)}
- H04N 21/4627: Rights management {associated to the content (security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08)}
- H04N 21/47202: {for requesting content on demand, e.g. video on demand}
- H04N 21/4788: communicating with other users, e.g. chatting {(arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104)}
- H04N 21/632: {using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices (broadcast-related systems characterised by transmission among terminal devices H04H60/80; distributed application using peer-to-peer [P2P] networks H04L67/104)}
- H04N 21/6547: comprising parameters, e.g. for client setup
- H04N 21/6581: {Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application}
- H04N 21/6582: {Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number (arrangements where receivers interact with the broadcast H04H20/38)}
- H04N 21/84: Generation or processing of descriptive data, e.g. content descriptors {(systems specially adapted for using meta-information in broadcast systems H04H60/73)}
- H04N 21/8451: {using Advanced Video Coding [AVC]}
- H04N 21/8456: {by decomposing the content in the time domain, e.g. in time segments}
- H04N 21/85406: {involving a specific file format, e.g. MP4 format}
- H04L 63/062: {for key distribution, e.g. centrally by trusted party (cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819)}
- H04L 2463/101: applying security measures for digital rights management
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Systems and methods for sharing content between devices are disclosed. To request a shared piece of media content, a playback device generates and sends a request to content server. The playback device includes information in the request that indicates the playback capabilities of the device. The content server receives the request and determines the playback capabilities of the playback device from the information in the request. The content server then determines the assets that may be used by the playback device to obtain the media content and generates a top level index file for the playback device that includes information about the determined assets. The top level index file is then sent to the playback device that may then use the top level index file to obtain the media content using the indicated assets.

## Claims

### Claim 1

A content server that provides encoded media to playback devices comprising:
a processor:
a memory readable by the processor; and
instructions in the memory that when read by the processor direct the processor to:
receive shared media content from a first playback device;
obtain a transcoding of the shared media content that includes assets to provide the shared media content in a plurality of alternative streams;
receive a request for the shared media content from a second playback device where the request includes device capability information of the second playback device;
generate a top level index file that includes information for assets that can be used to provide the shared media content to the second playback device based upon the device capability information for the second playback device; and
transmit the top level index file to the second playback device.