Editor

What they do

Before the shoot they read the script with the director, agree how the two of them will work, tell the post-production supervisor where the schedule is unrealistic, and settle with the script supervisor and first assistant editor how continuity notes, dailies, bins and colour coding will arrive. During the shoot they watch dailies against the lined script, facing pages and daily progress report, log preferred takes, and flag coverage the scene does not have while the set is still standing and a pickup is still possible. Scenes get assembled in Avid Media Composer or Premiere Pro: dialogue cut, temp atmospheres and effects laid, temp music dropped in, temp comps built so a visual effects shot reads for a viewing. Then the long stretch, which is the job. Assembly becomes a director's cut, then a producer's cut, an executive producer's cut and a network cut, each with a screening, a note session and a redistribution handled by the assistant. They restructure, drop scenes, move a beat from one episode into another, and build a moment out of an unused reaction. They attend music, sound and visual effects spotting sessions and say what each scene is for. After picture lock they stay across the mix and the grade. Much of any day is watching, arguing about one frame, and telling a director their favourite scene is holding the film back.

What they decide

The calls that belong to this role and no other.

• Which take of each line and each reaction is used
• Where every cut falls, to the frame
• The structure and order of scenes as proposed to the director, who signs off
• What the temp track is, and therefore what the film feels like in every screening before the mix
• Which coverage gaps get flagged for a pickup while the set still exists
• What is delegated to assistant, music and visual effects editors

Principles of the craft

• Cut on the change in intent: the reason to leave a shot is that the thought in the scene has moved, not that the action has finished. Cutting on movement hides the join, which is useful; cutting on intent makes the join mean something, which is the job.
• Sound leads picture: the ear commits before the eye. Bringing a sound in a few frames ahead of its image makes the picture cut feel inevitable, while landing both on the same frame announces that an edit happened.
• The audience only needs to know what it needs now: every frame explaining something a viewer cannot yet use is dead weight. Withholding is structure, not coyness, and most first assemblies explain too much too early.
• Protect the performance over the continuity: when the best take has the wrong hand and the matching take has nothing behind the eyes, take the performance. Audiences forgive a hand; they do not forgive a false moment.
• The temp track is a decision, not a placeholder: whatever a director hears twenty times becomes the film. Pick temp music that argues for the scene's intent rather than the record you love, or the composer inherits a fight they cannot win.
• Cut the scene, then cut the film: a scene that plays beautifully on its own can still be the one to lose. Judge every scene against the shape of the whole, not against its own best version.

Common mistakes

• Cutting to the coverage because it exists, master then singles in order, rather than because the scene needs the change
• Trimming performances to hit an idea of pace, ending with something fast that feels rushed rather than urgent
• Falling in love with the assembly and defending it in the note session instead of testing the note
• Treating sound as something added later, so the cut only works silent
• Leaning on temp music to carry emotion the picture has not earned, which collapses when the score arrives
• The competent editor's mistake: answering every note technically until the cut is smooth, defensible and dead

How to learn it

Exercises and routes in, not a reading list.

• Cut a two-page dialogue scene three times from the same rushes: once with no cut inside any line, once cutting only between lines, once cutting freely on reactions. Show all three to someone who has not read the script and ask who the scene is about.
• Take a finished scene, strip its audio, and re-cut the picture only to the original soundtrack. Then push every picture cut two frames later and watch which cuts stop working.
• Cut a scene with temp music, then watch it with the music muted. Whatever collapses is what the cut has not earned yet.
• Assemble one sequence, then take three minutes out of it without removing a whole scene. Then take three minutes out by removing a whole scene. Compare which version tells the story better.
• Watch a day of dailies for material you did not shoot and write a preferred-takes list before cutting. Cut the scene, then compare what you actually used against your list.