The time-varying appeal of an audiovisual stimulus cannot be directly observed because it is not only determined by the expression itself but also involves the viewer’s information processing. In this study, we attempted to reconstruct a time-varying common input that is an appeal to induce blink rate synchrony, i.e., blink rate is suppressed at appealing scenes. In the experiment, 44 (22 male and 22 female) university students watched two videos promoting a local area in Japan while detecting blinks using an eye-tracking device. The results showed that the reconstruction ability was less dependent on the embedding parameters. The results showed that the peak of the reconstructed common inputs did not always correspond to the most impressive scene. In the future, it would be beneficial to apply this method to physiological index data according to the type of attractiveness.