====== What is it ======
<blockquote>The term “B-roll” comes from the world of film where editors used to use an “A” and a “B” roll of identical footage, before the digital age changed everything. It is alternative footage intercut with the main shot.B-roll shots are similar to cutaways in that they help break up the static interview shots.</blockquote> [[https://www.quora.com/What-is-B-Roll-and-how-and-why-is-it-used-Do-companies-need-B-Roll|Quora doc]]