-Custom Forensic Watermarking of
Demo of MPEG Escort
Digital Rights Management (DRM) is proving to
be unpopular as users who purchase licensed content then find that
their fair use is annoyingly controlled. An alternative, less
restrictive approach that is gaining in popularity is to invisibly
emboss the licensor/licensee information into the content (including
all copies of it) in a way that it can be extracted later. Fair
use of purchased copyrighted content is allowed, but illegal publishing
or copyright infringement can be forensically traced to the licensee.
PixelTools’ MPEGEscort™ can
emboss MPEG video with data containing licensee or transaction information,
for later recovery.
For the past year, IndiePix Corporation (www.indiepix.net)
has been successfully protecting Independent Film content with forensic
Download EscortDem.zip to obtain
a limited evaluation copy of MPEG Escort. The instructions describe
how to insert your sample text as a watermark to any MPEG video and
later extract that text to a file or as an overlay of text on the decoded
The beauty of the MPEGEscort™ watermarking
approach is that the actual embossing of data can occur very rapidly
and with little computation at any place in the video delivery chain,
including at the client site.
The watermarking process occurs in two stages. For
each video to be watermarked, MPEGEscort™ first
analyzes the video to locate the suitable marking sites. This process
runs faster real time on a typical computer. For added security,
the site selection is a function of a security key.
content is purchased, it is transmitted to the customer’s
computer where The second stage of MPEGEscort™ inserts
the transaction-specific watermark data at the pre-selected watermarking
sites before burning the video as a DVD. This second stage of watermarking
requires little computer power running much faster than real-time on
a typical user’s computer.
Click here to see full size screen
watermark any multiplexed or elementary MPEG video with user data. MPEG
streams can be Program, VOB, Transport, System, or Elementary.
The watermark is not visually discernable but can be reliably extracted
using the MPEGEscort™ extraction
Watermark data bit-rate varies with content.
For a typical 6 mbps DVD VOB, MPEG Escort can typically add up to 3000
bits per second (which can be throttled to be less).
watermark during encoding, or to an existing stream after encoding. The
two stages of watermarking (analysis then insertion) can be performed
in 2 passes, separable in both time and location. Or, watermarking
can also be accomplished in a single integrated pass.
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