def METHOD_NAME(self):
    self.trajectory.advance_frame(-self.control.speed_selector.value())
    self.control.update_replay_time(
        self.trajectory.current_index * (1 / self.rec.fps)
    )
    self.render_widget.render()
    with QSignalBlocker(self.control.slider):
        self.control.slider.setValue(self.trajectory.current_index)