PLANET NVR-420 - Manual (Page 36)

5.1.2 Certain functions you can perform to the playback video
You can do the following by right clicking on the playback video:
1. Play Audio
2. Snapshot
3. Export as AVI file
4. Digital PTZ
5. Adjust Brightness
6. Adjust Contrast
5.1.3 Taking a Snapshot of a Playback Video
To take a snapshot, right-click on the video and select "Take Snapshot".
You are given with options to take 1 snapshot or 3 continuous snapshots.
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4-CH H.264 Network Video Recorder with HDMI
User’s Manual of NVR-420