Actually, it's probably "KAH-mee-noos" rather than "kah-MEE-noos." The accent usually falls in the penult when it is long or heavy, such as in words like reGIna (queen) or cenTAUrus (centaur). But as 'caminus' has a shorter/lighter penult, then the accent should fall on the antepenult instead, hence CAminus (forge) rather than caMInus. Compare this with the Latin pronunciation of other similar words with short/light penults such as DOminus (lord) or AMbulo (walk) etc.
Either way it's certainly NOT pronounced as "cammyness" as can be heard in Episode 1, as Latin lacks the schwa vowel (ə) used in languages like English. Latin only has 10 native vowels, the short and long forms of a, e, i, o and u.