Those were serials, though. I am not sure if they qualify as live-action films.
Why not? I was indeed thinking of the old b/w serials, which were the first movie versions of BATMAN . . . .
My point being that Hollywood has been making BATMAN movies for eighty years or so, but has made only two CONAN movies in that time . . . .
If you count serials you should also count tv shows, and Conan had 22 episodes of tv adventures.
Well, the serials were shown theatrically on the big screen, not on tv, but, okay, if you want to count the (gawdawful) CONAN tv show, you also have to count three seasons of Adam West as BATMAN, BIRDS OF PREY, plus umpteen Batman cartoon series . . . .