Motion capture acting means performing in a marker-covered suit inside a ring of cameras, so your movement drives a digital character. Performance capture goes further and records your face and often your voice at the same time. There is usually no set and no costume, just you, a few stand-in props and your imagination, so physical control and commitment matter as much as the lines. In video games, SAG-AFTRA treats it as covered work under its Interactive Media Agreement.
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Motion capture, or mo-cap, records how a performer moves and turns it into data that animators apply to a digital character. It is used for video game characters, creatures and digital doubles in film and TV, and animation.
For the actor, it is still acting. The character might end up a soldier, an alien or an animal, but the weight, timing and intention come from you. SAG-AFTRA describes performance capture as a skilled process that gives game characters realistic movement and emotion.
The terms overlap. Motion capture often means body movement only: running, fighting, climbing, reacting. Performance capture records the whole performance together, usually body, face and voice in one take, so the character's expressions come from the actor rather than being animated later.
Some projects split the jobs, with one performer doing the movement and another voicing the character. Others want one actor for all of it. A breakdown will normally say which, and it changes how you prepare.
You wear a snug suit dotted with small markers or sensors. Cameras arranged around the capture area, usually called the volume, track those markers from every angle. For performance capture, a head-mounted camera on a light rig records your face up close, and you may have dots on your face too.
Because every angle is recorded at once, there is no "cheating to camera". Your whole body is on all the time, much like a stage, which is why theatre-trained actors often feel at home there. More on that shift in stage vs screen acting.
Physical control first. Clear, specific movement reads well in the data, while vague or mushy movement doesn't. Movement training helps, and approaches like Laban, which gives actors a language for describing and interpreting movement, are a natural fit.
Stamina matters too: capture days can mean repeating physical actions many times. Add strong listening and the ability to stay truthful in a bare space, and many projects add stunts, combat, dance or sport on top. List any of those honestly on your resume; see special skills on an acting resume.
With a trained imagination. Kym Jackson says you'll need it for anything green screen or CGI, where actors play opposite a green blob or a person in a suit. She treats imagination as a muscle you train daily: daydreaming, playing "what if", and spending less time consuming content.
Her tip for picturing things that aren't there: you aren't really seeing them, you are feeling that they're there and remembering where they are. Place the monster, the cliff edge or the other character in your mind's eye, and keep them in the same spot every take. She also returns to improv classes when she feels herself drifting from play.
Differently from a standard close-up tape. Our self-tape expert said mo-cap casting usually wants a full-body frame, or at least a cowboy shot from the upper leg up, because they need to see how your body moves. Wear neutral, form-fitting clothes, like gym or yoga wear with no big logos, unless the instructions ask you to dress as the character.
Be sensible with physical scenes. Casting director Lisa Beach recalled an actor bringing a real sword to an audition in a tiny office, which is a no. Mime weapons and keep contact safe. The SAG-AFTRA 2025 video game agreement summary also says employers shall not ask performers to do a stunt that is too dangerous to be done safely during virtual auditions.
Expect to suit up and have markers placed, then calibrate: usually a neutral standing pose and a set of stretches and movements so the system learns your body. Props are often simple stand-ins, and a director or coordinator will talk you through what the finished world looks like.
It is physical, repetitive work. Under SAG-AFTRA's 2025 Interactive Media Agreement, as summarised on sagaftra.org, on-camera principal performers get a five-minute rest period for each hour of photography, and a qualified emergency medical person must be present or readily available for hazardous action. For general set etiquette, see film set terminology.
For video games, SAG-AFTRA says yes. In an August 2023 statement, the union said performance capture is covered work under its Interactive Media Agreement, which defines performers broadly to include anyone who acts or performs on or off camera.
It isn't entirely settled. As of November 2026, the union's 2025 agreement FAQ says SAG-AFTRA's position is that movement performers on a volume are clearly performing and covered, while the employers' bargaining group reserves a different position depending on the type of performance. Members approved that agreement on July 9, 2025, ending the video game strike (SAG-AFTRA). Capture for film and TV may fall under other contracts. This is general information; check with SAG-AFTRA or your agent for your situation.
Capture data is a detailed record of how you move and, in performance capture, how your face works. That is why consent matters. SAG-AFTRA says the 2025 agreement includes consent and disclosure requirements for AI digital replicas, and its summary says consent must be in writing, separately signed, with a reasonably specific description of the intended use.
Read what you sign, and ask your agent or the union before you agree to any replica clause on a non-union job. More in will AI replace actors?
Build the body and the skills first: movement classes, physical theatre, combat or stunt training, dance or sport. Then look for capture roles on the usual casting sites and through agents, and include footage on your reel that shows how you move, not just your face.
If you voice characters as well, game work can combine both; see voice acting jobs. Pay depends on the project and contract, so check union scale on sagaftra.org or ask your agent rather than relying on figures you see online.
Performing in a marker-covered suit while cameras record your movement, which animators use to drive a digital character in games, film or TV.
Motion capture usually records body movement. Performance capture records body, face and often voice together, so the whole performance comes from the actor.
For video games, SAG-AFTRA says performance capture is covered work under its Interactive Media Agreement, though the employers reserve a different position for some types of performance. Film and TV capture may fall under other contracts.
Neutral, form-fitting clothes such as gym or yoga wear with no big logos, unless the instructions ask you to dress as the character.
Wider than usual. Casting usually wants a full-body frame or at least a cowboy shot, so they can see how you move.
Sometimes. Some projects use one performer for movement and another for voice; others capture body, face and voice from the same actor.
A capture stage is still a set, with a crew and a rhythm of its own. Grab Your Free On Set Guide.
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