You say you want Kirk Gibson with the game winning home run of the '88 world series? NO! That's too specific, that is not b-roll!!!
This can also be used to change the meaning of the speaker to fit the view of the producer.
In fiction film, the technique can be used to indicate simultaneous action or flashbacks, usually increasing tension or revealing information.
Soon all television will be commercials.
A roll containing bacon and egg and one's choice of bbq or tomato sauce. Handmade by God and/or Jesus. Known for producing never-ending streams of yolk onto one's face, melting its contents into one's mouth and lifting one's spirits for 2-3 weeks inclusive.
verb - to get one's broll on: "lets broll";
adj - to describe something beautiful and/or delicious: "it's a broll day"."