@woland
first of all, thank you very much.
I applied the 3rd example and it worked. I had to tweak a few values but it works perfectly.
The project, which is part of my practice-based PhD, is an art installation.
I walked from England to Italy last summer, and I want the visitor to the installation to experience part of my walk.
When they enter the space, they are presented with a walking machine (along with other things).
When they start walking the video, recorded with a 360 camera, of my walk is activated and when they stop the video carries on without showing, and you can just hear the sound.
It is a way for me to create a sort of reward, where if they walk they can see what is happening.
I was really stressing out, and you guys here are so knowledgeable and really helped.
And if you are ok, I will mention all of you in this topic and the troikatronix community, in the acknowledgement of my final thesis.
Really thank you!!!!!!!!!!!!!!