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NVS User’s Manual
22
4.6.3
Digital Signature Verification
The digital signature verification function aims to authenticate if a video file
with assigned digital signature is altered. Follow the description below to
verify the digital signature.
•
Click <Play> on the main window toolbar.
•
Click <Verify> tab to display the Verify window.
•
Click <Browse> to select the video’s GPG, DVR, SIG files respectively.
•
Click <Verify> to start verifying digital signature.
•
The result of verify will be shown in the <Status Log> field. It returns a
GOOD or BAD signature result. A GOOD signature indicates the video
has not been altered.
4.6.4
Playback Controls
During playback of local or remote video, the remote monitoring software is in
Playback Mode. The playback controls toolbar will emerge on the main
window toolbar. The playback controls and indicators are described as below.
Icon Name
Description
◄◄
Fast Backward /
Step Backward
1. Click to play the recorded video in backward
direction. Click repeatedly to select backward
playback speed: 1
×
, 2
×
, 4
×
, 8
×
, 16
×
, or 32
×
.
2. When playback is paused, click repeatedly to
move backward step-by-step.
►
/
▐
▌
Play / Pause
1. While playing, click to pause the playback.
2. When paused, click to resume the playback.
►►
Fast Forward /
Step Forward
1. Click to play the recorded video in forward
direction. Click repeatedly to select forward
playback speed: 1
×
, 2
×
, 4
×
, 8
×
, 16
×
, or 32
×
.
2. When playback is paused, click repeatedly to
move forward step-by-step.