What Is ADR? How to Prepare for Your First Looping Session

The shoot wrapped weeks ago. You’ve already told everyone about it, and you’ve half forgotten what you wore. Then an email arrives from production: can you come in for ADR on Thursday? There’s a time, an address that turns out to be a sound studio, and not much else.

If it’s your first time, the questions pile up. Did you do something wrong? Do you need to learn anything? Is this a paid day?

The short version: ADR, also called looping, is re-recording your own dialogue to picture after the shoot. It’s often about sound, not about you. In the booth you watch the scene, hear your original line in headphones, and say it again in time with a few beeps until it fits your mouth on screen. To prepare, find out which lines they need, relearn the exact words you said on the day (not the script draft), rehearse saying them in the same rhythm, and check your contract for how the session is paid.

Know what ADR is and why it’s called looping

ADR stands for automated dialogue replacement. Wikipedia’s article on dubbing describes it as re-recording dialogue by the original actor, or a replacement actor, in a sound booth. The same article uses dubbing for the broader job of replacing dialogue, often with a translation; ADR is the use you’ll meet as an actor on an English-language shoot.

The nickname comes from how it used to work. In early sound films, a loop of film was cut and spliced together for each scene that needed new dialogue, and it played over and over while the actor performed. That was the looping session. Videotape and then digital systems replaced the loops, but the name stuck, and you’ll hear “ADR” and “looping” used for the same day of work.

Someone decides which lines come back. A sound editor or ADR supervisor goes through all of the dialogue in the film and picks the lines that must be re-recorded. You don’t choose, and usually neither does your memory of how the take felt.

Don’t take the call personally

A common first thought is that you flubbed something. Usually you didn’t. StudioBinder’s guide to ADR in film lists the common reasons: dialogue from set that can’t be heard, a better performance, a change to what a line means, and voice-over or off-screen lines that were never shot at all.

Often it has nothing to do with your acting. A plane went over. A generator hummed. The boom couldn’t get close in a wide shot. The editor cut the scene so that a joke needs a new setup line. Julie Altus, who has worked on the ADR stage at Todd-AO, told No Film School that ADR is used to fix clarity and accents and to clean out bad production noise on lines.

So treat the email as part of the job. Then ask one practical question: which scenes and lines will we be doing?

Expect beeps, picture, and your own voice in your ears

The room is smaller and quieter than a set. You’ll stand or sit at a microphone facing a screen. Behind glass, or sometimes in the same room, are the mixer who records you and often the ADR supervisor or director who tells you what they need.

The USC School of Cinematic Arts lays out the routine in its ADR stage guide. You wear headphones so you can hear the original dialogue you’re replacing. The scene plays on a screen with timecode burned into the picture, which marks exactly where each cue sits. Before your line, the engineers add three distinct beeps so you get into a rhythm. Then you say the line, and it’s re-recorded as many times as needed until the new take matches the picture.

In practice, that rhythm is the heart of the day. You watch the shot, listen to yourself from set, take the beeps, and speak. Then it rolls back and you do it again. Some studios also use visual cues called streamers as the count-in, as well as or instead of beeps. Beep timing can vary, so on your first cue ask the mixer exactly where your first word should land.

Each line is a separate cue, so you’ll work in small pieces and may repeat one sentence many times while the room adjusts the timing, the energy, or a single word.

Rebuild the performance you gave on set

Hitting sync is the technical half. The harder half is sounding like the person on screen. Altus describes the job as getting actors to recreate the feelings, the voice match, and the emotions of the scene. She also points out the obstacle: the ADR room is “a large empty stage”, and it can be hard to get back to the place you were in when you shot it.

Max Howarth of the Edinburgh post house Red Facilities makes the same point in his piece on why ADR experience matters: “The harder challenge is matching emotional continuity.” Weeks or months later, your headspace may feel very different from the one you had on set, and the microphone can hear it.

Your body is the fastest way back. If the character was running, breathe like it before the cue. If you were lying down, let your voice drop the way it did. If you were shouting over a storm, shout. Paul Maunder at Production Expert advises that lines in a noisy scene be spoken at the level they’d really be delivered at, and notes that mixers sometimes play background noise in your headphones to get you there. A whisper in a booth won’t sit inside a battle.

Watch your own face, too. The picture shows where a breath happened and when you swallowed, and those are the beats your voice has to match.

Say the exact words, because your mouth is already on screen

On stage, a small paraphrase can slip by. In ADR it can’t. StudioBinder describes the actor re-performing each line to match “the lip movement, wording and performance”. Your lips are already moving on screen. Say “I’m not going” where you said “I am not going” on set, and you’re a syllable short of the mouth on screen.

Here’s the part first-timers miss: the words that matter are the ones you said on the day, not the ones in your script. Actors adjust a line in the moment, directors change it between takes, and scripts get revised. If a line came out differently in the take the editor chose, that version is now the text. Ask whether you can see the scenes or get the cue list before the session, and if not, listen closely to the guide track in your headphones on the first pass.

The exception is a line they’re changing on purpose. If the editor needs a new word, the supervisor will tell you, and it still has to fit the mouth movements already on screen. Learn those changed lines word for word, because there will be no time to look down at a page while the beeps count you in.

Prepare for your first session in five steps

You can’t rehearse with the picture before you arrive, but you can arrive with the words and the rhythm already in your mouth. Here’s a sequence that works:

• Ask for the list. Ask production, or have your agent ask, which scenes and lines are being looped, and whether any lines are new or changed.
• Find the version you shot. Mark any line you remember changing on the day, and write it down the way you actually said it.
• Relearn it word-perfect. Cover your lines, say them from the cue, and check each word, so a near miss doesn’t feel like a hit.
• Rehearse the rhythm, not just the words. Say each line after a steady count of three, the way the beeps will cue you, and keep the length the same every time.
• Warm up and rest your voice. If you’ll be re-creating shouting, crying, or a fight, warm up properly and don’t spend your voice the night before.

The word-perfect step is where stumbles hide. In Offbook, first edit the uploaded scene so your lines read the way you said them on set, then rehearse with Strict line detection: realistic voices read the other parts, Offbook listens while you say yours, and Strict mode keeps you close to the script. Hide your lines first, and you’re testing recall rather than reading.

If you only have a few short lines, our free first-letter memorizer turns them into first-letter cues, so you can catch a swapped “a” for “the”. For more on learning screen dialogue quickly, see our guide to memorizing lines for film and TV.

Rehearse for sync before you walk in

Sync is a timing skill, and timing can be practiced. Start by saying each line at the pace you used on set, then try it slightly faster and slightly slower without dropping any words.

Practice the start, too. A common slip is the first word: you come in late after the last beep, or you rush to beat it. Count three steady beats out loud and start your line in that same rhythm, then adjust once the mixer tells you exactly where your first word should land.

It helps to hear the scene moving around you. Offbook’s listen mode plays the whole scene aloud so you can hear how it moves. When you rehearse, you can set how fast the voices read the other parts, so you hear your cues at different speeds and get used to being ready to come in.

If a scene has a gasp, a laugh, or an effort in it, rehearse that sound as carefully as the words. Our piece on film acting vs. theater acting covers how screen work differs from stage.

Check how the session is paid

Whether and how an ADR session is paid comes from your contract, not from a single industry rule. If you’re working under a union agreement, that agreement is where to look for the pay and time terms.

The UK makes a useful example because the digest is public. The Equity/Pact cinema films digest (rates effective April 2022 to April 2023) sets minimum terms for post-synchronisation, which it defines as dubbing the artist’s own role: half the actor’s negotiated daily salary plus use fees for up to five hours, with a minimum fee, and the full daily salary plus use fees over five hours. Notice the wording: in that digest, “ADR” is a separate category covering the creation of atmosphere, sounds, and dialogue to fit with action, often over crowd scenes, so the name on your call sheet may not match the contract’s.

In the US, if you’re on a SAG-AFTRA job, check your contract or ask the union how looping is paid on your agreement. On a non-union or student film, ask before you confirm the date whether the session is paid, and get the answer in writing. A deal memo that says nothing about post-production is worth a polite question before the shoot, not after.

What to do on the day

Arrive on time and warmed up, with water. Bring your marked lines, but expect to put them away once the cues start. Like a set, a sound stage runs on someone else’s clock. Our guide to your first day on set covers the same etiquette.

Listen to the guide track every time it plays. It’s your best reference for pace, pitch, and where the breath went. If the supervisor gives a note, change one thing on the next take, not three, so everyone can hear what moved.

Keep your energy steady through the repetitions. The tenth take of one line should sound as alive as the first, and if you’re losing it, ask for a short reset.

Questions actors ask

What is ADR in film?

ADR, or looping, is re-recording dialogue after the shoot, usually by the original actor in a sound studio, to fix unclear or noisy audio, change a line, or add lines that weren’t filmed. The actor watches the scene and speaks in sync with their mouth on screen.

Is ADR the same as dubbing?

They’re related. Dubbing is the broad term for replacing dialogue, and it often means a film voiced in another language by different actors. ADR is usually you replacing your own lines in the same language.

Does ADR mean my performance was bad?

Usually not. Often it’s about sound: noise on set, a mic that couldn’t get close, or an edit that needs a new line. Sometimes a director wants a different reading, but that’s a note, not a verdict.

How do I get better at ADR?

Practice exact words and exact timing. Rehearse your lines word-perfect, say them after a steady count so you start on time, and listen to your own original takes closely. Voice work helps too; our voiceover audition tips cover mic technique that carries over to the booth.