Why? Can't you cope with being dead?
At first reading of your comment I thought what? and was going to insert an appropriate meme. I'm fine with my mortality, thanks for asking.
Could you? It's extremely difficult to correctly translate ancient languages even when they are known because you also need to understand the culture in order to correctly translate slang and nuances. If you encountered a language that isn't known (what language did people near Stonehenge speak ~5000 years ago?) it would be impossible.
Since we've talking about a magic camera, why not have a magic translator too?
No you wouldn't, because they wouldn't believe you. Religion has absolutely nothing to do with evidence, so no evidence is even relevant let alone conclusive.
I think it wouldn't make matters any worse for two reasons. Firstly, it's impossible for such proof to exist. Religion is an untestable hypothesis. Secondly, even if it was possible to prove the existence of a god or gods that would not prove the validity of orders written by people claiming the authority of that god or gods. So religion would remain a matter of faith and there would be no extra reason for people to war over it or be a slave to orders written by people claiming the authority of gods or to destroy science. We have some theists doing one or all of those things anyway and probably always will do. Proof that some sort of god or gods existed in the ancient past needn't increase their number.
With enough visits and context I'm sure we'd be able to translate, it's only a language, not the enigma machine.
Unequivocal evidence of no god - yet some would still believe. However, if evidence suggested there was a god you don't think it would increase the number of followers? We can't have it both ways.
Debate and opinion is good, it's just a shame such threads end up in such religious dogma.