docs: def set_scenemode(self, scenemode='auto'):
          """Set the video scene mode.
  
          Return a coroutine.
          """
          if scenemode not in self.available_settings['scenemode']:
              _LOGGER.debug('%s is not a valid scenemode', scenemode)
              return False
          return self.change_setting('scenemode', scenemode)