Conversation so far:
Did Oprah star in any films?
Oprah Winfrey played Gloria Gaines in The Butler (2013).
Was the butler an award winning film by chance?
The Butler won the African-American Film Critics Association Award for Best Supporting Actress, and Montecito Award at the Santa Barbara International Film Festival.
Was Oprah Winfrey in any other films in her career besides the butler?
Oprah Winfrey voiced Eudora in The Princess and the Frog (2009), and played Annie Lee Cooper in Selma (2014).
Did Oprah Winfrey do any voice roles in the films or did she always perform?
Oprah Winfrey voiced Eudora in The Princess and the Frog (2009).
Did Oprah Winfrey receive an award for The Princess and the Frog?
The Princess and the Frog (2009) won the Women Film Critics Circle Award for Best Animated Females
Was there any other films Oprah Winfrey performed in besides the butler, selma, and princess and the frog?
Oprah Winfrey voiced Gussie the goose in Charlotte's Web (2006) and voiced Judge Bumbleton in Bee Movie (2007).

Question: How long was her career in filming?
Self-contained rewrite: How long was Oprah Winfrey's career in filming?