There are essential things
Click here to download software
Download and open the software Accept Click - https://play.google.com/store/apps/details?id=com.kimcy929.secretvideorecorder
Two icons will come in your phone (Font camera / back camera)
If you want to record the video with the camera in front, click the back camera if you want to video with the font camera and the back camera
Now turn off the light of the phone and you will see the record will not be off
This way everyone is recording the video and nobody will live
Click the icon in the Back / Font camera to close the video
Now watch the video on the Notification Bar
Now you can see the secret video.