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Alibi™ NVR Firmware V3.6.22 User Manual
SECTION 7: RECORD, PLAYBACK AND VIDEO BACKUP
Parameters include:
—
Pre-record
: The length of time you set to record before the scheduled time or event. For example, when an alarm
triggered the recording at 10:00, if you set the pre-record time as 5 seconds, the camera records it at 9:59:55.
—
Post-record
: The length of time you set to record after the event or the scheduled time. For example, when an alarm
triggered the recording ends at 11:00, if you set the post-record time as 5 seconds, it records till 11:00:05.
—
Expired Time
: The expired time is the longest time a recording is kept on the HDD. If the deadline is reached, the file
will be deleted. If you set the expired time to 0, the file will not be deleted. This parameter is usually determined in
consideration of the capacity of the HDD.
—
Record Audio:
Check the checkbox to enable audio recording.
—
Video Stream
: You can select
Main Stream
,
Sub-Stream
or
Dual Stream
for recording. When you select sub-
stream, you can record for a longer time with the same storage space.
a. Select the options you prefer from the drop down options lists.
b. Enter the
Expired Time (day
) length and check
Record Audio
if appropriate.
c. Click
OK
to save the settings.
5. Open the
Sub-stream
tab page and then configure the parameters of the camera.
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