bcode cannot be used in titles, so no [S][/S]
You need to steer clear of certain rights holders, without exception. Don't mess with the Mouse.
Aside from that, it really depends on multiple factors. For example, to aide in creating a documentary. Or foreign sources. What you probably won't be doing (SHOULDN'T!) is converting big-budget/big-name movies or anything from the modern digital-release era. We're talking obscure and niche stuff here.
There are certain phrases that are good to know, good shoot-downs in any business. My favorite is "I'll take that under advisement" aka "piss off with your stupid ideas". So, on this topic...
"This isn't something that can be done." ... further explanation not needed. If pressed, just repeat it.
I've never understand the "IANAL" stuff. It is anal. It serves no real purpose. Silly disclaimer where no disclaimer is needed. I'm also not a baker or chef, but I'll give you a good cake recipe if you want it.
My favorite legal advice comes from the movie Liar Liar: "Stop breaking the law a--hole!"