Yes, I had the video interview last week.
It was a new experience for me and to be honest I was surprised how nerve wracking i found it. It's also strange not having the reactions of an interviewer to work with, it's just you talking to your laptop.
There was a setup section and practice questions so you can get used to it and check how the recording looks and sounds. Then once it started for real it was 5 questions you get a certain amount of time to read each question and a certain amount of time to answer. Questions were fairly standard, why do you want to join openreach etc etc.
In the end I think it was only 30 mins and that included the setup.