Its the wife. Without a doubt. First off If someone was trying to ruin the marriage why would they put "for your eyes only". Secondly if it was with 3 different guys in her house it HAS to be her camera and if she's filming why wouldn't she keep at least a copy. Thirdly, lets say she did share all these videos with another guy. If she's willing to share with that guy what would stop her from sharing them with her husband? He seems understanding and calm about the situation so they must have a healthy, understanding sex life. So she would feel comfortable enough with him to share them. It was her. Definitely. This is a sexual fantasy being played out. I will print this out and literally eat my words if its not her.