I love role playing games being able to act out the roles within a narrative.
Really what kind roles do you act out
Well, In the Original Form its through discussion type, whereas In live action, the players physically perform the character actions.
That sounds interesting.  What kind of action do they perform?
Some RPG perform single player roles where they undertake quests. Thats my favorite.
 Is this role-playing in a video game setting?
There are several types or RPG , especially in electronic media. 
what is an RPG?