Dance Duo Mocap: Capture Partner Dance Routines with AI

Camera Angle: Straight-On, Slightly Elevated

Position the camera at roughly chest height, pointed straight at the performance space. For partner dances with lifts (ballet, swing aerials), raise the camera to head height so the lifted dancer does not leave the frame. Avoid low angles -- they make leg tracking harder for the AI. A slight downward angle of about 10 to 15 degrees works best for most partner styles.

Distance: Frame Both Dancers from Head to Toe

Stand far enough back that both dancers are fully visible -- head to toe -- throughout the entire routine. For a fast-traveling dance like salsa or swing, leave extra space on the sides. The rule of thumb: if either dancer's feet or hands leave the frame even once, the tracking will glitch. Better to film slightly too wide than slightly too tight.

Lighting: Bright, Even, No Shadows on Dancers

Natural window light from the front or side is ideal. Avoid overhead spotlights that cast harsh shadows on the floor -- the AI can mistake shadows for limbs. If filming indoors, use two soft lights placed at 45-degree angles to the performance space. Our AI motion capture recording tips covers lighting setups in detail.

Background: Simple and Uncluttered

A plain wall, studio backdrop, or empty room works best. Complex backgrounds (busy wallpaper, furniture, other people) confuse the person-detection model. If you must film outdoors, choose an open space with grass or pavement -- avoid tree lines or buildings that create visual noise behind the dancers.

Stabilize: Tripod Required, Lock Focus and Exposure

Do not film handheld. Camera shake adds noise that the AI has to work around, reducing tracking accuracy. Use a tripod or rest your phone on a stable surface. On most phones, long-press the screen to lock focus and exposure -- this prevents the auto-exposure from shifting mid-dance and confusing the brightness-dependent tracking models.

Create a New Project and Upload Your Video

Click New Project on the QuickMagic dashboard, select Video to Motion, and upload your dance footage. Supported formats include MP4, MOV, and AVI. For best results, upload your highest-quality source file -- do not compress or re-encode it first.

Select Multi-Subject Mode

In the processing settings panel, toggle Multi-Subject Tracking to ON. QuickMagic will automatically detect all visible people in the video. You should see two detected subjects appear in the preview. If the system detects more than two (e.g., from background people or reflections), you can manually specify the number of subjects to track.

Important: Multi-subject tracking uses more processing credits than single-subject mode. Each person tracked per second of video consumes one credit (plus optional face and hand tracking add-ons). Plan your video length accordingly.

Configure Tracking Settings

For partner dance capture, these settings matter most:

• Tracking Mode: Full-Body (not Upper-Body). Partner dances involve footwork, lifts, and leg wraps -- you need complete body data.
• Hand Tracking: ON. Partner connection points (hand holds, waist grips, shoulder contacts) are critical. Hand data keeps those interactions physically accurate.
• Face Tracking: Optional. Enable it if you plan to use the animation for close-up cinematic shots where facial expression matters.
• Output Frame Rate: Match your video source. If you filmed at 30 fps, export at 30 fps. If you filmed at 60 fps for slow-motion polish, export at 60 fps.

Submit and Process

Click Start Processing. Depending on your video length and plan tier, processing takes anywhere from 2 to 15 minutes. You will receive a notification when the animation data is ready for review.

Play Through Both Animations Simultaneously

Scrub through the timeline with both character skeletons visible. Pay special attention to moments where the dancers are closest -- hand connections, lift points, and embrace positions. If one dancer's arm clips through the other at a contact point, you will need to fix that in the next step.

Check for Identity Swaps

In fast spins or when dancers cross paths, the AI may briefly lose track of which body is which. QuickMagic's identity-tracking model is robust, but check these specific moments: rapid underarm turns in salsa, traveling pass-by movements in swing, and rotational lifts in ballet. If you spot an identity swap (dancer A briefly becomes dancer B), you can usually fix it by re-running the processing with a different subject-count setting.

Run QuickMagic's Built-In Cleanup Tools

Use the Motion Cleanup panel to address common duo-tracking artifacts:

• Foot Sliding: Enable foot-locking to prevent the common "moonwalk" effect on floor contact frames. This is especially important for partner dances with precise footwork like tango or ballroom.
• Jitter Smoothing: Apply mild smoothing (setting 2-3 out of 10) to reduce micro-jitter without losing the sharpness of quick dance movements. Over-smoothing will kill the energy of the performance.
• Ground Contact: Adjust the ground plane to match your actual floor surface. Both dancers should make consistent, believable floor contact.

For a deeper dive into cleanup workflows, see our MoCap physics cleanup guide.

Export Both Animations

Each tracked subject exports as an independent animation file. Choose your format based on your target software:

Import Both FBX Files into the Same Scene

In Blender, UE5, or Maya, import dancer A's animation and dancer B's animation into the same project file. They should share the same world origin so their positions relative to each other are preserved. QuickMagic exports both animations with a shared coordinate space, so they should line up automatically.

Retarget to Your Character Rigs

Map each animation to its target character rig using your software's retargeting system:

• Blender: Use the Action Editor and bone-mapping to apply animation data. Our Blender workflow guide shows the full process.
• Unreal Engine 5: Use IK Retargeter to map the QuickMagic skeleton to your UE5 Mannequin or MetaHuman rig. See the MetaHuman retargeting guide.
• Maya: Use HumanIK or the QuickMagic ADV Plugin for direct retargeting within Maya.

Verify Timing Synchronization

Play both character animations together and verify that they stay in sync. The hand-connection point at 0:15 should still match at 0:15 on both characters. If the animations drift apart, check that both FBX files were exported at the same frame rate and neither was resampled during import.