5 beeps when starting

Hello im new here, trying to find a reason for a beeping sound in my 2016 prius

it beeps 5 times after pressing the start button with no dashboard lights, no engine codes no battery codes, car drives normal. I made a video and uploaded to youtube but since im new it wont let me post the link get

 

I turned off the seatbelt beep with the dr prius app

 

I got it figure it out. It was my recording camera. The flash card went out and it was BB because the flash card can I record video any longer