code: def set_scene_velocity(self, scene_id, velocity):
          
          if not scene_id in self.state.scenes: # does that scene_id exist?
              err_msg = "Requested to set velocity on scene {sceneNum}, which does not exist".format(sceneNum=scene_id)
              logging.info(err_msg)
              return(False, 0, err_msg)
          self.state.scenes[scene_id] = self.state.scenes[scene_id]._replace(velocity=velocity)
          sequence_number = self.zmq_publisher.publish_scene_velocity(scene_id, velocity)
          logging.debug("set velocity on scene {sceneNum}".format(sceneNum=scene_id))
          if scene_id == self.state.activeSceneId:
              self.state.activeAnimation.set_velocity(velocity)
              self._do_next_frame() # TODO: make it more sensible, e.g. call only if static scene
          return (True, sequence_number, "OK")
docs: reconfigure a scene by scene ID