I got cut off at the end, read the rest to find out why and what I said.
My primary recording software has stopped working for reasons that make no sense to me so I had to use another software which has a 10 minute time limit, which in this video, happens to be just seconds short of what I needed.
the rest of the sentence that got cut off is as follows
"this is how it creates the horizontal movement, and this mechanism can be found on the other side for the other half of the door."
...
https://www.youtube.com/watch?v=COqhCesT5pg