Things don’t always go to plan on set. Wind, traffic, a nearby generator or a rustling costume on the lavalier mic, and suddenly an important line is barely audible. Yet the scene is often perfectly acted and needs to stay in the film. That’s exactly what ADR is for: re-recording dialogue in the studio. In this article we explain when ADR is needed, how an ADR recording session works and what matters so that nobody can hear the difference in the end.
What is ADR?
ADR stands for Automated Dialogue Replacement, also known as dialogue replacement or looping. The actor re-records individual lines in the studio, precisely in sync with the picture. Unlike dubbing into another language, ADR keeps the original language, and usually the same actor who was on set records the lines.
When do you need ADR?
- Noise on set: wind, road traffic, aircraft, rain or generators mask the dialogue.
- Technical problems: radio mic dropouts, clothing rustle on the lavalier or distorted recordings.
- Script changes after the edit: a line needs to be rephrased, a brand name has to go, or the TV version needs a cleaner line.
- Unclear passages: a word is mumbled or the delivery no longer fits the edited scene.
- Additional lines: off-screen dialogue, inner thoughts, phone voices or lines from characters who are not in shot.
- Background voices: murmurs and calls from groups (walla) that bring a scene to life.
How an ADR session works
1. Spotting: the ADR list
The director, editor and sound engineer go through the locked cut together and mark every line that needs to be re-recorded. The result is the ADR list with timecode, original line and the reason for the re-record. It is the basis for planning the session.
2. Preparation in the studio
The marked lines are set up as short sections that can be repeated as often as needed. The original audio plays as a guide, so the actor hears exactly how the line was delivered on set.
3. Recording
In the recording booth, the actor watches the scene, hears three short beeps as a countdown and speaks the line straight to picture. Each line is recorded several times. The director makes sure performance and energy match the scene: if the character is running, freezing or shouting on screen, it has to sound that way in the studio too. The engineer watches lip sync and makes sure microphone and distance match the production recording.
4. Selection and editing
After the session, the best takes are selected and edited syllable by syllable to the lips. Often the best beginning and the best ending from different takes are combined.
5. Matching in the mix
So that the new line does not sound “like a studio”, it is matched to the production sound in the mix: with tone, room reverb and the right ambience. The goal is that nobody notices which lines were replaced. Learn more on our page audio post-production and sound design.
Tips: how to make ADR invisible
- Plan early: check the actors’ availability in good time. ADR dates often fall in a tight window just before delivery.
- Provide good reference audio: even noisy production sound is a useful guide for pace, emphasis and emotion.
- Match the microphone: let us know which microphones were used on set. A similar sound makes matching much easier.
- Recreate the situation: movement, effort and distance from the camera should be reflected in the voice.
- Few, targeted lines: the more precise the ADR list, the more efficient the session.
The best ADR is the ADR you don’t need
Good sound on set saves time and budget in post-production. With an experienced sound recordist on the shoot, many problems can be avoided before they happen. Learn more on our page on-set sound and remote services.
Frequently asked questions about ADR
What do we need to provide for an ADR session?
A reference video with timecode, the dialogue tracks from the edit (for example as AAF or OMF) and ideally an ADR list. If there is no list yet, we are happy to create it together with you.
Does the actor have to come to Munich?
Not necessarily. Via Source-Connect and SessionLink, recordings can also take place remotely, and directors or producers can listen live and give direction from wherever they are.
How long does an ADR session take?
It depends on the number of lines. A few lines often need only a short session; for many scenes or several roles, we plan one or more studio days. With the ADR list we can give you an accurate estimate.
What is the difference between ADR and dubbing?
With ADR, individual lines are re-recorded in the original language, usually by the same actors. With dubbing, the entire dialogue is translated into another language and recorded by different voice actors. Our article How Does Dubbing Work? explains the process.
ADR recording in Munich
Do you have lines in your film that need to be replaced? Send us your ADR list or a short description of the project, and you will quickly receive a tailored quote. Learn more about our voice-over and ADR studio, our studios or go straight to contact.
