US 11,659,257 B2
System and method for watermarking of media segments using sample variants for normalized encryption (SVNE)
Prabhudev Navali, Westford, MA (US); Raj Nair, Lexington, MA (US); and Pablo Argon, Redmond, WA (US)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed on Aug. 16, 2022, as Appl. No. 17/888,612.
Application 17/888,612 is a division of application No. 16/482,486, granted, now 11,457,290, previously published as PCT/IB2018/000210, filed on Feb. 22, 2018.
Claims priority of provisional application 62/463,473, filed on Feb. 24, 2017.
Prior Publication US 2022/0394358 A1, Dec. 8, 2022
Int. Cl. H04N 21/2347 (2011.01); H04N 21/20 (2011.01); H04N 21/8358 (2011.01); H04N 21/2343 (2011.01); H04N 21/437 (2011.01); H04N 21/4405 (2011.01); H04N 21/845 (2011.01)
CPC H04N 21/8358 (2013.01) [H04N 21/2347 (2013.01); H04N 21/234309 (2013.01); H04N 21/437 (2013.01); H04N 21/4405 (2013.01); H04N 21/8456 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for distributing media content with watermarking, the method comprising:
transcoding a media content asset into a plurality of MPEG-Transport Stream (TS) elementary streams comprising a main elementary stream having a first watermarking (WM) payload and at least one sample variant (SV) elementary stream having a second watermarking (WWM) payload;
generating a main ISOBMFF track of the media content asset from the main elementary stream having the first watermarking (WM) payload, in which the main track contains samples and is encrypted with a first encryption scheme;
generating at least one ISOBMFF sample variant track of the media content asset from the SV elementary stream having the second watermarking (WM) payload in which only a subset of samples contained in the main ISOBMFF track have a corresponding sample variant in the ISOBMFF sample variant track;
generating a plurality of composite segments for the media content asset, each composite segment including a segment portion of the main track and, if available, a corresponding portion of the at least one ISOBMFF sample variant track, wherein the first watermarking payload and the second watermarking payload are each identified by a respective watermarking identifier (wmID); and
wherein the first watermarking payload and the second watermarking payload are each identified by different respective WM identifiers (wmIDs) assigned by a watermarking agent operating in association with the transcoder;
uploading the plurality of composite segments to an origin server node coupled to a content delivery network (CDN).