Basic operations

Expression, gaze and head motion: families, baselines and clips

Match the avatar’s expression, gaze and head movements to what it is saying.

7 stepsActual product screenshotsBased on the November 2026 interface

BEFORE YOU START

Before you start

Choose the avatar and moments where movement will help.

Screenshots show actual sample projects. Your interface may vary with your plan and updates. Instructions describe desktop browser operation; this guide can also be read on a phone.

STEP01

Select the intended presenter

Select the intended avatar clip, especially when two people are present. Use Base expression in the toolbar to add an expression associated with that avatar.

  1. Action Choose an expression
Base-expression menu with expression family and strength. The product screenshot is in Japanese; the instructions explain the controls.
STEP02

Understand Standard and Ekman

Basic facial expressions in Japanese people have been reported to differ from the Ekman classification. MotionVox calls its Japanese expression family Standard and offers Standard six basic expressions and Ekman six basic expressions. Compare joy, sadness, anger, surprise, fear and disgust on your presenter and scene. Neutral is available separately as the unmodified face.

  1. Enter Family and strength
Base-expression menu with expression family and strength. The product screenshot is in Japanese; the instructions explain the controls.
Neither is a quality ranking
The families produce different expressions. Compare the result for the person, script and impression you want.
The family is track-wide
Changing the family affects clips throughout that base-expression track. Review the surrounding clips rather than treating it as a one-clip setting.
STEP03

Choose an expression and strength

Choose the family and strength in the add menu, then the expression. Select the resulting clip to adjust expression, strength, transition and duration. Start around 50% and lower it if it feels exaggerated. Strength does not change Neutral.

  1. Action Choose an expression, then adjust its type and strength.
Controls for the base expression and its strength. The product screenshot is in Japanese; the instructions explain the controls.
STEP04

Set the baseline used between clips

Click the base-expression track name and inspect Baseline expression when there is no clip. Keep the initial neutral face or choose a baseline for the scene. Review both clip intervals and gaps.

  1. Check Check the target avatar
  2. Enter Family applies to track
  3. Enter Baseline during gaps
Base-expression track settings: target avatar, expression family and baseline during gaps. The product screenshot is in Japanese; the instructions explain the controls.
STEP05

Smooth expression changes and avoid overlap

Transition controls how quickly the expression changes. Avoid abrupt changes by matching it to the dialogue. Do not overlap clips on the same base-expression track. The still preview is a reference; check expression and mouth movement in generated video.

  1. Action Choose an expression, then adjust its type and strength.
Controls for the base expression and its strength. The product screenshot is in Japanese; the instructions explain the controls.
STEP06

Distinguish eye direction from head motion

Base gaze controls the eyes, not a turn of the whole head. Adjust horizontal/vertical direction and transitions for the associated avatar. Use Head motion for actions such as nodding and place them at the intended moment.

  1. Action Choose an expression, then adjust its type and strength.
Controls for the base expression and its strength. The product screenshot is in Japanese; the instructions explain the controls.
STEP07

Add brief reactions and review the result

Use base expression for the scene’s sustained mood and expression/emote controls for brief reactions. Keep a listener’s reactions restrained. Changes can mark associated avatar video as needing an update; regenerate the required range before reviewing the whole sequence.

  1. Action Click Generate ungenerated clips.
  2. Check After generation, the avatar clip will say Preview generated.
After adding speech, generate the video preview. The product screenshot is in Japanese; the instructions explain the controls.

BEFORE YOU FINISH

One final check.

Natural-looking results depend on intensity and frequency. Start subtly and refine using the generated video.

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