videos recorded between alerts

Using ring stick-up cameras. Noticed something went missing in my garage. Went to check the recorded footage to find out that there is a 12 hour window that wasn't recorded. We have video that the item is there in the moring and then another video 12 hours later that shows that the item was gone. There was no motion alert at all. The videos that we have are from us looking at the live views at those times. Was wondering if the Ring cams record videos in between alerts or continously through out the day? and if so, how to request that footage?