Under the comments section of the video, a translation:
Doc Holliday: In vino veritas (In wine is truth) (When I'm drinking, I speak my mind)
Johnny Ringo: Age quod agis (Do what you do best) (Drink)
Doc Holliday: Credat Judaeus apella, non ego (The Jew Apella may believe it, not I) This was an insult because Ringo was supposed to be from a bloodline of jews and hated it.
Johnny Ringo: Eventus stultorum magister. (Events are the teachers of fools) (Fools have to learn by experience)
Doc Holliday: In pace requiescat (Rest in peace) ('s your funeral)
There you go, if you have every wondered about that scene.....