GeoVision GV-PTZ010D, Firmware Manual, Page: 228 / 257

DVR Configurations
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Live-view Key Frame only: You can choose to view the key
frames of the videos only instead of all frames on the live view.
This option is related to the GOP setting of the IP camera. For
example, if the GOP value is set to 30, there is only one key
frame among 30 frames.
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Live-view frame rate control (Main stream): Sets the live view
frame rate of the main stream with higher resolution when On
Demand function is enabled. Refer to Live-view frame rate control
above to see the options available.
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Image Orientation: You can adjust the image orientation by selecting
Normal , Horizontal Mirror , Vertical Flip or Rotate 180 .
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Frames to keep in live view buffer: Specifies the number of frames
to keep in the live view buffer.
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Recording Codec Format: Specifies whether to record in standard
or GeoVision type of JPEG or H.264 codec.
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GIS Setting: Records the video with the GPS data. To record the
GPS data, remember to also enable the GIS function of the GV-DVR /
NVR (Configure button < Accessories < Enable Local GIS).
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Automatically Adjust DST: If enabled, the time on the GV-IP device
Web interface will be synchronized with the time of the GV-DVR /
NVR when DST period starts or ends on the GV-DVR / NVR.