I didn't watch the video while I am at work.
The bottom line is if this feral cat does not look health or unhappy, then have some professional come over to get them. feral cats are not safe if they were going straight home first without checking at the Vet. My hub and I took one feral cat and drove straight to the VET. Vet did look thorough our furkid and seems to vet that this kitty was ok. So we took him home right away. This kitty was outside for all his life. So we were careful and left this kitty alone for a week but we tried to get close to this feral kitty. After one week, we all become best friend.

If feral adult cat is already mature then its too late and better let them stay outside as long as they needed to be spayed and neutered then let go.