<Pre-trigger buffer> function allows users to check what caused the
trigger. The <Pre-trigger buffer> frame rate could be pre-determined. On
the other hand, <Post-trigger buffer> is for users to upload certain
amount of images after alarm input is triggered.
NOTE: <Pre-trigger buffer> generally ranges from 1 to 20 frames.
However, the range will change accordingly if the frame rate of
MJPEG on Streaming> Video Configuration is 6 or smaller.
Check the box <Continue image upload> to upload the triggered images
during certain time or keep uploading until the trigger is off.
Select <Upload for __ sec> and enter the duration in the blank. The
images of the duration will be uploading by E-mail when the alarm input
is triggered. The setting range is from 1 to 99999 sec. Select <Upload
during the trigger active> to make the images keep being uploaded to
E-mail during the trigger active until the alarm is released. Set the Image
frequency as the upload frame rate. The setting range is from 1 to 15
frames.
NOTE: Make sure SMTP configuration has been completed.
Refer to section Mail for further details.
⚫ Send HTTP Notification
Check this item and select the destination HTTP address. Then specify
the parameters for event notifications by <Alarm> triggered. When an
alarm is triggered, the HTTP notification will be sent to the specified
HTTP server.
For instance, if the custom parameter is set as “action=1&group=2”, and
the HTTP server name is “http://192.168.0.100/admin.php”, the
notification will be sent to HTTP server as “http://192.168.0.100/
admin.php/action=1&group=2” when alarm is triggered.
⚫ Record Video Clip
Check this item and select a video recording storage type, <SD Card> or
<NAS> (Network-Attached Storage). The alarm-triggered recording will
be saved into the microSD/SD card or the NAS.
<Pre-trigger buffer> recording function allows users to check what
caused the trigger. The pre-trigger buffer time range is from 1 to 3 sec.