A-Roll

What this is about

Where b-roll illustrates, a-roll states. It is the layer an edit is structured from, because the words set the length and the order of a piece. That gives it a different production logic: sound quality matters more than variety, a second camera angle buys editing freedom, and a person who dries up mid-sentence costs more time than a missing detail shot. Most edits begin as a radio edit of the a-roll alone, with the pictures arriving only once the argument holds.

A term only helps when everyone on set means the same thing by it — so what follows is how it is used, not a dictionary definition.

What runs differently here

In planning terms, that means:

• Sound is the priority on a-roll: a beautiful image with unusable dialogue helps nobody
• A second camera angle on interviews makes shortening possible without visible jumps
• Build the structure from a-roll first, then choose b-roll for the gaps it leaves

With TillyGen

TillyGen's schedule keeps interview blocks and their setup times realistic, so the material the whole edit rests on is not shot in the last half hour.

Change one constraint and the consequences travel through the whole plan: affected shots are flagged, the call sheet is regenerated, and nobody keeps working from yesterday's version.