(Caveat: As usual, I haven't watched the video.)
I used to work with a middle-plus-aged, pot bellied, Indian guy, who would go to the gym and leer at the young women, and who was convinced that the waitresses thought he was hot. (He would regularly leave a $20 bill for $5 tabs to get this reaction.)
If the guy she apparently presumes is hitting on her is anything like the guy I worked with, ignoring him won't make him go away. She'll have to be direct and tell him she's not interested in further conversation. Then, after he ignores what she's told him - and he will - complain to the management.