Is it normal to have a fear of videos

I'm working in an IT industry and sometimes, people would ask me to watch videos. They would say that its some sort of a demo. I trust them, really, 'cause they're professionals but I honestly wouldn't dare to open that file of demo video. Why? Cause I wouldn't take anyone's word above the thoughts that are already playing in my head.

I only watch videos that I've watched with people before. I never watch a video alone. Is this normal? I can't watch YouTube or any video clips alone, even when the lights are on. I can only watch them when there is at least one person with me that I'm sure would be staying until the video's done.

Yes, that's weird.