La commande `\transduration` de beamer permet de faire ça. [cf. [https://tex.stackexchange.com/questions/40332/how-can-i-set-a-time-between-slides-to-create-an-automatic-slideshow-with-beamer][1]
(cf. [https://tex.stackexchange.com/questions/40332/how-can-i-set-a-time-between-slides-to-create-an-automatic-slideshow-with-beamer][1])
[1]: https://tex.stackexchange.com/questions/40332/how-can-i-set-a-time-between-slides-to-create-an-automatic-slideshow-with-beamer
