I am making a school project. The project will be a lost item finder. There will be a CCTV with object detection, and it will record down all the video into my sd card. And later a phone application will be used, to select the item that are lost. After that, the raspberry pi will read through the videos and let the user preview a 5 seconds clip for the item last seen. The raspberry pi will delete the videos saved from time to time too. Anyone can give me brief guide on how can I create this? I don't have a mentor to guide me and I am very new to this field.
Thank you and have a nice day!