From the video I can't ID them for 100% sure. My wife who is better at this tham me, thinks they may both be Florida Fighting Conch (which are reef safe). Maybe you could pull each one out, set it in a small bowl and take a few good photos and post them. There are several people here who should be able to help ID them.
BTW, you need to be careful with conch as some/many of them are carnivorous and will eat anything meaty they can catch. We just saw a 18" horse conch in the keys. After we took the photo my wife was putting it back and it spit out a 4-5" west indian conch (like the live one in the second photo) that was completely cleaned out! Note the wad of algae just beside the foot. That was attached to the west indian conch! We had no idea the other conch was inside being consumed.