User Manual of E Series Network Mini PTZ camera 
© Hikvision 
 
Figure 5-2 Record Parameters 
  Pre-record: The time you set to start recording before the scheduled time or the event. 
For example, if an alarm triggers recording at 10:00, and the pre-record time is set as 5 
seconds, the mini PTZ camera starts to record at 9:59:55. 
The Pre-record time can be configured as No Pre-record, 5 s, 10 s, 15 s, 20 s, 25 s, 30 s or 
not limited. 
  The pre-record time changes according to the video bitrate. 
  Post-record: The time you set to stop recording after the scheduled time or the event. 
For example, if an alarm triggered recording ends at 11:00, and the post-record time is 
set as 5 seconds, the mini PTZ camera records until 11:00:05. 
The Post-record time can be configured as 5 s, 10 s, 30 s, 1 min, 2 min, 5 min or 10 min. 
  Overwrite: If you enable his function and the HDD is full, the new record files overwrite 
the oldest record files automatically. 
  Recording Stream: You can select the stream type for recording;  Main stream and Sub 
Stream are selectable. If you select the sub stream, you can record for a longer time with 
the same storage capacity. 
  The Pre-record and Post-record parameters vary depending on the mini PTZ camera 
model. 
4.  Click OK to save the advanced setting.