It's literally in the first paragraph: The Commodore Amiga 4000/040 was used by Digital Domain to help craft effects shots and review miniature shoots for Tita

It's literally in the first paragraph: The Commodore Amiga 4000/040 was used by Digital Domain to help craft effects shots and review miniature shoots for Titanic, Apollo 13 and True Lies. The video shows footage of miniatures for Titanic. True Lies and Apollo 13 didn't have footage of a model of The Titanic.