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Advanced Applications
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6.4 Verifying Watermark
The watermark is an encrypted and digital signature embedded in the video stream during
the compression stage, protecting the video from the moment of its creation. Watermarking
ensures that an image is not edited or damaged after it is recorded. To enable the watermark
function, see [Watermark], 4.1.1 Video Settings.
The Watermark Proof is a watermark-checking program. It can verify the authenticity of the
recording before you present it in court.
6.4.1 Accessing AVI Files
To verify watermark, first you have to access the recorded AVI files by one of these methods:
1. Use the File Save function on the Live View window (Figure 3-3) to start recording on the
local computer.
2. Use the Act as FTP Server function to download AVI files from the camera. See 4.3.2
FTP.
3. Use the files recorded on the memory card. Since the files saved on the memory card
are of Linux file system, remember to run IFS Drives to convert the Linux-based files to
Windows-based files. For the instructions, see Steps 1 to 2 in 5.2.1 Playback Using the
Memory Card.
6.4.2 Running Watermark Proof
1. Install Watermark Proof from the company website. After installation, a WMProof icon is
created on your desktop.
2. Double-click the created icon. The Water Mark Proof window appears.
3. Click File from the menu bar, select Open and locate the recording (.avi). The selected
recording is then listed on the window. Alternatively, you can drag the recording directly
from the storage folder to the window.
4. If the recording is unmodified, a check will appear in the Pass column. On the contrary, if
the recording is modified or does not contain watermark during recording, a check mark
will appear in the Failed column. To review the recording, double-click the listed file on
the window.
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