Good post.
It's just strange with all that and perhaps more if they are going down the harrasment route, why he hasn't been charged and released on bail.
The video I watched, the person does do it on more than one occasion, in seperate locations, but to the same girls, in the first 40 seconds of the video! It's also prolonged and really creepy, following them constantly.
Also, there's a very good chance that somebody who stands on the streets of the same city every Friday and Saturday night, following girls, and filming them constantly, is going to end up filming the same girls multiple times across different nights.
Regardless, I'm not a lawyer, solicitor, or any kind of legal professional. But my understanding is as follows... Whilst you're right, stalking and harassment has to be on more than one occasion, it doesn't have to be the same offence, so long as it's behaviour that "causes someone alarm or distress." It's important to note that this can also include online. In this case, if he's following and filming somebody, when repeatedly asked not to, he knows he's causing distress. If he then goes and uploads that video too, and the fact that him uploading the video has damaged their reputation, as can be evidenced by the degrading comments section of these videos, he's then guilty of stalking.
2 different actions, including online actions, that cause the victim alarm or distress on 2 different occasions... It's stalking. But again, this is just my ignorant interpretation, and understanding.