During the exhaustive seven-month search, they auditioned along with thousands of other children and were selected for their respective roles.
This 2000 screen test is a far cry from where these former child stars now find themselves.
Daniel Jacob Radcliffe was born on July 23, 1989 in Fulham, London, England, to casting agent Marcia Gresham (née Jacobson) and literary agent Alan Radcliffe.
His father is from a Northern Irish Protestant background, while his mother was born in South Africa, to a Jewish family (from Lithuania, Poland, Russia, and Germany).
Daniel Radcliffe thinks he has a long time to wait before having to consider reprising his role as wizard Harry Potter.
The 24-year-old actor – who found fame as a youngster in the films adapted from JK Rowling's novels – addressed the possibility of returning to the big screen as the spectacle-wearing character.
Even in this shaky and clearly nervewracking screen test for the first "Harry Potter" film, Daniel Radcliffe, Emma Watson, and Rupert Grint had palpable on-screen chemistry.
That chemistry helped spawn eight films and an incredible .7 billion in box office receipts.
According to the clapperboard seen in the video, the screen test was shot in Aug.
9, 2000 -- just before they were officially announced as the stars of the "Harry Potter" films.
The three young actors play through a scene from “Harry Potter and the Sorcerer’s Stone” in which their characters learn about the titular stone created by mysterious Nicolas Flamel.