05.01.2005 05:05 PM
Nextamp showcases digital watermarking solution for HD content

At NAB2005, Nextamp demonstrated its new NexMaster’s system. It inserts a digital watermark into an MPEG-4 AVC/H.264 encoded file of HD content.

NexMaster removed those limitations and inserted a unique identifier into a video file post compression. The solution creates an invisible watermarking of individual copies, which acts as a digital fingerprint that can be assigned and created for each individual recipient of the file. The embedded mark dissuades recipients from illicitly reusing content.

Using Envivio encoding systems in the demonstration, visitors tried to see the difference between a video file that contains a digital watermark and one that doesn’t. However, they weren’t able to. The watermark is a virtual barcode that is embedded in the essence of the video. Even if the video has been edited or undergone format changes, the invisible stamp stays with it, providing forensic tracking capabilities to trace a marked video file back to its source.

Such indelible ID stamping enables forensic tracking for both illegal file-swapping on the Internet and pirated DVD editions. As a fingerprint of the original recipient for the genuine copy, it makes it easy to localize the infringing party.

The NAB demonstrations leveraged the Envivio 4Coder HD encoder to generate MPEG-4 AVC/H.264 files of contribution type quality for HD video. The resulting files are then processed using Nextamp’s NexMaster for watermark embedding directly within H.264 format. Once encoded, it is easy to generate several individual copies, each with a unique watermark.

For more information, visit www.nextamp.com.

Back to the top

Post New Comment
If you are already a member, or would like to receive email alerts as new comments are
made, please login or register.

Enter the code shown above:

(Note: If you cannot read the numbers in the above
image, reload the page to generate a new one.)

No Comments Found

Thursday 10:05 AM
NAB Requests Expedited Review of Spectrum Auction Lawsuit
“Broadcasters assigned to new channels following the auction could be forced to accept reductions in their coverage area and population served, with no practical remedy.” ~NAB

202 Communications /   Friday 12:41 PM
Albis Technologies Appoints New Head of Access Solutions
ignite strategic communications /   Thursday 03:48 PM
2015 HPA Tech Retreat(r) Unveils Expanded Session Schedule

Featured Articles
Discover TV Technology