In most countries works go into public domain XX years after death of author. Predicting date of death is non-trivial problem.
Of course, the real problem is that the system is not seriously designed with the idea that false positives are a problem.
I would know because I'm on the tail end of cleaning up affairs from a recent family death.
You key is evicted buddy, now go back to the big blob of matter.
(a) the principal director
(b) the author of the screenplay
(c) the author of the dialogue, and
(d) the composer of music specially created for and used in the film
> Copyright in the film expires 70 years from the end of the calendar year in which the last person listed above dies.
Taken from: https://www.copyrightuser.org/create/public-domain/duration/
Do extras count? Many of them aren't going to be listed in the credits.
Perhaps you could only count those actors listed in the credits at the end of the film and nobody else?
> Do extras count? Many of them aren't going to be listed in the credits.
The person who is the most successful actor -- if you take the box office of all their appearances and sum them -- is Stan Lee. All those MCU appearances adds up. You probably wouldn't be too surprised about that if you thought about it.
At position number 3 though is Frank Welker -- the guy who voices Fred in much of the original Scooby-Doo cartoons. More recently he's Nibbler in Futurama. The top 5 have 2 other voice actors, including Bob Bergan -- who played Merv in Monsters University, and unforgettably Ant Worker #2 in Antz
When you are credited as "Additional Voices", does it really apply?
Incidently, Stan Lee may be top of the charts in total, but Warwick Davis is a bigger hit on average -- bringing $633m per film he's in compared to Lee's $612m.
https://en.wikipedia.org/wiki/List_of_highest-grossing_actor...