In this paper we present Synesthetic Video, an interactive video that allows to experience video in cross-sensorial ways, to hear its colors and to influence its visual properties with sound and music, through user interaction or ambient influence. Our main motivations include accessibility, enriching users experiences, stimulating and supporting users creativity, and to learn more about synesthesia and how videos can influence and be influenced by users and the ambient, at the crossroads of art, science and technology.