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9.2 Watermark Viewer
GV-VMS can embed digital watermarks in video streams for authentication purposes. The watermarks
are encrypted with digital signatures in video streams during the compression stage, ensuring that
images are not edited or damaged after they are recorded. In addition, you can apply the Watermark
Proof, a watermark-checking program included in the installation of GV-VMS, to further verify the
authenticity of the recording.
Note: To run the Watermark Proof application in the backup file on your PC without GV-VMS, you
must register the GeoVision Video Codec manually (go to the recorded files’ location >
GeoCodecReg folder > double-click GeoCodecReg).
9.2.1 Activating Watermark Protection
To enable the watermark protection, click Home > Toolbar > Configure > System
Configure > Record Setting. Select Use Digital Watermark Protection and click OK. GV-VMS will
digitally sign videos during the recording.
Figure 9-3
9.2.2 Running Watermark Proof
1. Go to the GV-VMS folder and run WMProof.exe. The Watermark Proof window appears.
2. Click File from the menu bar, select Open, locate the recorded file (.avi) and click Open. The
selected file is listed on File List (No. 9, Figure 9-4). Alternatively, you can directly drag the file
from the storage folder to the window.
˙ If the recording is unmodified, a check mark will appear in the Pass column.
˙ If the recording is modified or does not contain watermark during recording, a check mark will
appear in the Failed column.
3. To play the recording, double-click the listed file on the window.
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