Hi Patrick,
i am working on a project which involves the “new” (online-ready) rating scale feature and movie stimuli at the moment.
I have used the last 10 minutes to produce a minimal example for a “play bar” using a few stimuli (play, pause symbol) and the rating scale to match your desired behavior.
Hope this helps you and maybe others! The smooth rating scale is awesome. Thanks to the PsychoPy-Team!
https://run.pavlovia.org/luke.boelling/movie_stim_controls/
Edit: It may be possible to animate the red button to match the movie timestamp…