If required, how to....

Although an individual may be protecting themselves by zhikr in various methods, occasionally there will be instances where the jinn have managed to penetrate and cast a hold upon the person.

Therefore it would be necessary to carry out an exorcism. These will show what happens during an exorcism as well as how to conduct it.

In Christianity understanding, exorcism is broken down to different sections,

 From "The Roman Ritual"  —  1952 A.D.

1. INTRODUCTION
2. GENERAL RULES CONCERNING EXORCISM
3. RITE FOR EXORCISM
4. EXORCISM OF SATAN AND THE FALLEN ANGELS

In Islamic understanding also the same applies;
a comprehensive account is available for one who aims to familiarise them self.

an exorcism in conduct in progress 

It would be understandable if the videos are not watched in full, as sometimes theres a difference in watching something for the effects than reading upon it and allowing your own imaginations and limits conjure the pictures.