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Using Mixamo Animations

Export your avatar model from rooomAvatars and apply Mixamo animations in Unity or other 3D applications.

By the end of this tutorial, you have a Mixamo animation applied to your rooomAvatars character inside a Unity project.

Prerequisites ​

  • A rooomAvatars API token — see Authentication
  • A free Adobe account for Mixamo
  • Unity installed (this tutorial uses the Unity integration path)

How it works ​

rooomAvatars models use a Mixamo-compatible full-body skeletal rig. This means any animation from Mixamo works with your exported avatar without re-rigging.

Export the model without baked animations (the default) to keep the file size small, then load animations separately in your engine.

Step 1: Export your avatar model ​

When the user saves an avatar in the configurator, the rooom-avatars-completed message includes a modelUrl field. Download the .glb model from that URL:

bash
curl -o avatar.glb "MODEL_URL"

Replace MODEL_URL with the full URL from the rooom-avatars-completed message payload or from the POST /avatar response. See Endpoints for details.

TIP

You can also call GET /model/:id.glb?animations=none explicitly to confirm that no animations are baked into the download, keeping the file lightweight.

Step 2: Find an animation on Mixamo ​

  1. Go to mixamo.com and sign in with your Adobe credentials.
  2. Browse or search for an animation.
  3. Preview it — all Mixamo animations share the same humanoid skeleton, so any clip will work with your avatar.

Step 3: Download the animation ​

Click Download and set the following options:

SettingValue
FormatFBX for Unity
SkinWith Skin
Frames per Second30
Keyframe ReductionNone

Click Download to save the .fbx file.

INFO

The "With Skin" option bundles a placeholder mesh alongside the skeleton. Unity reads this to infer the rig structure. You remove the mesh in a later step.

Step 4: Import into Unity ​

  1. Copy the downloaded .fbx file into your Unity project's Assets folder.
  2. Select the file in the Project panel.
  3. In the Inspector, open the Rig tab.
  4. Set Animation Type to Humanoid.
  5. Click Apply.

Step 5: Extract the animation clip ​

The FBX contains both a mesh and an animation track. Separate them so you can use the clip independently:

  1. Right-click the FBX file in the Project panel.
  2. Select Extract Animations — Unity creates a standalone .anim clip next to the FBX.

Step 6: Add the clip to your Animator ​

  1. Open or create an Animator Controller for your avatar.
  2. Drag the extracted .anim clip into the Animator window.
  3. Connect the clip to a state in the state machine.

See Unity Animator documentation for details on state machine setup.

  1. Press Play — your avatar should now play the Mixamo animation.