What special effects were there in Harry Potter and the Philosopher's Stone?

Answer 1

I believe they use a green screen. They film the background first then with a green screen they tape the players on brooms. then they merge the background with the players. They also have complicated stunts and the actors do sit on broomsticks which is very painful.

Answer 2

Special Effects in movies are either made by the computer or by combining videos.

Combining Videos

Usually if you are combining videos you take a video...i gtg...nvm

Answer 3

Some of the special effects in the Harry Potter and the Philosopher's Stone movie were the Troll and the Centaurs. Most of the creatures are animated and so are some of the magical aspects.

Answer 4

This article by the CG Society gives some answers:

http://features.cgsociety.org/story_custom.php?story_id=4225

Answer 5

With a computer, and very good skills.