Forensic watermarking
First Claim
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1. A method for encoding a segment of a video file with a unique identifier, the method comprising:
- receiving, via a data network, a request for the segment of the video file, wherein the segment of the video file includes video data and comprises one of a plurality of separately-addressable segments of the video file for use by a media player to individually stream each of the plurality of separately-addressable segments of the video file from one or more source files;
determining, using a computer processor, the unique identifier, wherein the unique identifier is based on unique information included in the request;
retrieving the requested segment of the video file from data storage;
encoding at least a portion of the video data of the requested segment with the unique identifier; and
sending, via the data network, the requested segment of the video file having the video data encoded with the unique identifier.
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Abstract
Techniques are disclosed for watermarking a video file by watermarking a requested chunk of the video file, which can be done in real time after the request is made for the chunk, during playback of the video file. These techniques can include determining a unique identifier based on unique information of the request and encoding the unique identifier in the requested chunk before sending the requested chunk. Some embodiments can include joining the watermarked chunk with other chunks to reproduce the video file, and sending the reproduced video file having the watermarked chunk included therein.
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Citations
20 Claims
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1. A method for encoding a segment of a video file with a unique identifier, the method comprising:
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receiving, via a data network, a request for the segment of the video file, wherein the segment of the video file includes video data and comprises one of a plurality of separately-addressable segments of the video file for use by a media player to individually stream each of the plurality of separately-addressable segments of the video file from one or more source files; determining, using a computer processor, the unique identifier, wherein the unique identifier is based on unique information included in the request; retrieving the requested segment of the video file from data storage; encoding at least a portion of the video data of the requested segment with the unique identifier; and sending, via the data network, the requested segment of the video file having the video data encoded with the unique identifier. - View Dependent Claims (2, 3, 4)
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5. A server for encoding identification information into a requested segment of a video file, the server comprising:
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a network interface; a memory configured to store one or more segments of the video file; and a processor communicatively coupled with the memory and the network interface and configured to cause the server to; receive, using the network interface, a request for one of the one or more segments of the video file, wherein the requested segment of the video file includes video data and comprises one of a plurality of separately-addressable segments of the video file for use by a media player to individually stream each of the plurality of separately-addressable segments of the video file from one or more source files; determine a unique identifier, wherein the unique identifier is based on unique information of the request; retrieve the requested segment of the video file from the memory; encode at least a portion of the video data of the requested segment with the unique identifier; and send, using the network interface, the requested segment of the video file having the video data encoded with the unique identifier. - View Dependent Claims (6, 7, 8)
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9. A non-volatile computer-readable storage medium having instructions embedded thereon for encoding identification information into a requested segment of a video file, the instructions, when executed by a processor, cause the processor to:
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receive a request for the segment of the video file, wherein the requested segment of the video file includes video data and comprises one of a plurality of separately-addressable segments of the video file for use by a media player to individually stream each of the plurality of separately-addressable segments of the video file from one or more source files; determine the unique identifier, wherein the unique identifier is based on unique information included in the request; retrieve the requested segment of the video file; encode at least a portion of the video data of the requested segment with the unique identifier; and send the requested segment of the video file having the video data encoded with the unique identifier. - View Dependent Claims (10, 11, 12, 16)
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13. The server for encoding the identification information into the requested segment of the video file as recited in claim Error! Reference source not found., wherein the processor is configured to cause the server to include, in the unique identifier, data indicative of at least one of:
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a globally-unique identifier (GUID), a source of the video file, an entity related to the video file, a location associated with the media player that generated the request, a time of day, a network type, a device type, a date, an Internet Protocol (IP) address, or a Media Access Control (MAC) address.
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- 14. The server for encoding the identification information into the requested segment of the video file as recited in claim Error! Reference source not found., wherein the processor is configured to cause the server to choose the request from a plurality of requests, wherein each of the plurality of requests is made by the media player for a different segment of the video file and received by the server.
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17. A non-volatile computer-readable storage medium having instructions embedded thereon for encoding identification information into a requested segment of a video file, the instructions, when executed by a processor, cause the processor to:
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receive a request for the segment of the video file, wherein the requested segment of the video file includes video data and comprises one of a plurality of separately-addressable segments of the video file for use by a media player to individually stream each of the plurality of separately-addressable segments of the video file from one or more source files; determine the unique identifier, wherein the unique identifier is based on unique information included in the request; retrieve the requested segment of the video file; encode at least a portion of the video data of the requested segment with the unique identifier; and send the requested segment of the video file having the video data encoded with the unique identifier. - View Dependent Claims (19, 20)
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18. The non-volatile computer-readable storage medium having the instructions embedded thereon for encoding the identification information into the requested segment of the video file as recited in claim Error! Reference source not found., wherein the request is received from the media player during playback of the video file.
Specification