If you want for a JPEG still frame to be attached to an alarm message or video fragment when a sensor is activated (Sensor object), remember that this is possible only after the current archive file has been written to disk. To reduce the waiting time (the Delay (sec.) parameter, see the section Configuring sensors) and be assured of camera recording, you can create a program on the Programming tab of the System settings window in Intellect, based on the example below.

The program is written for a camera with an ID of 1 and for a Sensor object whose ID is also equal to 1. Thanks to this program, the value of the Delay parameter can be set equal to 7 seconds.

OnEvent("GRAY","1","ALARM")
{
[
    if( !CheckState("CAM","1","DETACHED") )
    {
        DoReact("CAM","1","REC_ROLLBACK");
        Wait(5);
        DoReact("CAM","1","REC_STOP");
    }
]
}
 
OnEvent("GRAY","1","ALARM")
{
[
    Wait(2);
    DoReact("GRAY","1","CONFIRM");
    Wait(2);
    DoReact("GRAY","1","ARM");
]
}



When continuous recording is in use, the following program should be used:

OnEvent("GRAY","1","ALARM")
{
[
Wait(5); // Specifies the time after which the recording should be stopped in order to get the required clip length or number of frames
DoReact("CAM","1","REC_STOP");
Wait(2); // Pre-alarm record time in the camera settings = 2 sec.
DoReact("CAM","1","REC_ROLLBACK"); // Start recording with pre-alarm recording of 2 seconds. This allows us not to lose data in the archive
]
}