Start with the subject
Begin with “a person” so the prompt clearly describes the animated character.
Blender add-on · Local AI motion
Describe the move.
Shape the result.
Motion Flow turns simple text into editable character animation without leaving Blender. Write an action, guide important poses, and generate a complete motion sequence on a Core27 rig.
Current releaseMotion Flow 0.6.2
Motion modelNVIDIA ARDY
ProcessingRuns locally
See it in action
From a sentence to a moving character.
These are real Motion Flow results playing directly in Blender.
Person limps over obstacles with their injured leg while moving in a circular pattern.
A person picks up a small object with both hands from a medium height in front and puts it away high up back.
A person is stealthily walking sideways to their right at a slow pace, taking medium steps in a criss-cross fashion while taking multiple turns.
A person standing upright swiftly performs a worm-like victory dance by hunching forward and making loose, chaotic arm movements.
ADD MOTION FLOW GIF HERE
Prompt → Generate → Play animation
Square format · Recommended 1080 × 1080Prompting ARDY
Write movement the model can follow.
ARDY (Autoregressive Diffusion with Hybrid Representation) generates human motion from text. Treat a prompt as a clear physical direction for a Core27 character: name the subject, the action, and where it moves.
Name the action
Use direct, observable verbs such as walks, turns, reaches, jumps, or sits.
State the trajectory
Add physical direction when it matters: forward, backward, to the right, or in a circle.
Prompt formatting examples
Keep the description grounded in a movement a person can physically perform.
| Desired animation | ARDY prompt |
|---|---|
| Basic movement | a person is walking |
| Directional shifting | a person side steps to the right |
| Complex action | a person is running, jumping, and sitting |
Stay physical
Prompt human actions such as walking, gesturing, turning, or crouching. Abstract or impossible requests can produce unreliable motion.
Use positive phrasing
Say what the character should do. Instead of “without swinging arms,” describe the intended arm position or movement.
Keep it concrete
Translate mood into visible movement. For example, use “walks slowly with a slumped posture” instead of “walks sadly.”
Iterate in steps
Use Motion Flow’s prompt chain to break a longer performance into simple actions, then adjust each prompt and duration for a better transition.
Learn more
Read the ARDY research paper for the underlying real-time motion-generation system. Motion Flow uses ARDY locally with its Core27 rig workflow.
Prompt chaining
Build one motion from several simple actions.
Motion Flow joins prompt steps into one continuous animation, so you can describe a longer performance one action at a time.
Prompt timeline
7.5 sec total
Features
Simple inputs. Useful control.
Start with words, guide the details that matter, and finish with normal Blender tools.
Text-to-motion
Describe an action in everyday language. Motion Flow creates natural full-body animation directly in your scene.
Prompt chains
Join several actions into one sequence. Set the duration of each step and change their order at any time.
Pose guidance
Guide a hand, foot, hip, body section, or full pose at a chosen frame. Control how strongly each target is followed.
Preserve existing motion
Use animation from a selected frame range as guidance when generating a new result.
Background generation
Keep Blender responsive while motion is generated. Clear status and progress messages show what is happening.
Local generation
The model and managed server run on your computer. After setup, generation does not depend on a cloud service.
Installation
Set up once. Work inside Blender.
Keep motion_flow_addon.zip and models_bundles.zip compressed. Motion Flow handles the rest from Blender preferences.
System requirements
Windows only (currently). Requires Blender 4.6 or newer, at least 16 GB of system RAM, and an NVIDIA RTX GPU with at least 8 GB of VRAM.
- 1
Install the add-on
Open Blender and go to Edit → Preferences → Add-ons. Choose Install from Disk, select
motion_flow_addon.zip, and enable the add-on. - 2
Set up the local server
Open the Motion Flow preferences. Under Server Environment Setup, choose Setup Local Server. Keep Blender open until setup is complete.
- 3
Install the AI models
Under Local Models Installation, select
models_bundles.zipand choose Install Models from ZIP. - 4
Check that it is ready
The preferences should show Ready (Server & Models Installed). Press N in the 3D Viewport and open the Motion Flow tab.
Video guide
Follow the complete setup.
Use this area for a YouTube walkthrough covering installation, the first prompt, constraints, and generation.
Interface guide
Every control, clearly explained.
Motion Flow is organized into five small panels in the Blender sidebar, plus one setup area in add-on preferences.
Motion Flow
Generate and monitor your sequence.
- Prompt & constraint counts show what will be used.
- Server status shows whether generation is ready.
- Generate Motion Sequence starts the current setup.
Prompts
Build a longer motion, one step at a time.
- Add, remove, or reorder motion steps.
- Prompt describes the physical action.
- Seconds sets each step's duration.
Constraints
Guide key poses without losing control of the motion.
- Bone and Section capture a precise pose or body area.
- Preserve Existing Range uses an animated frame range as guidance.
- Influence controls how closely a target is followed.
- Refresh, remove, and enable keep constraints easy to manage.
Generation Settings
Balance direction, variation, and repeatability.
- Text and constraint strength tune prompt and pose guidance.
- Motion Cleanup refines the generated result.
- Fixed Seed makes comparisons repeatable.
Server
Manage local AI inference.
- Status reports whether the local server is ready.
- Start and Stop give you manual control when needed.
Add-on Preferences
Set up the local server, models, and output behavior.
- Server URL and Idle Timeout manage the local service.
- Generated Rig chooses whether to reuse or import a rig.
- Setup Local Server installs the bundled runtime and dependencies.
- Model ZIP Path and Install Models from ZIP install the AI models.
Motion Flow
Main status and generation controls
Prompt count
Shows how many prompt steps will be generated.
Constraint count
Shows how many enabled pose targets are active.
Server status
Shows whether the local AI server is offline, starting, online, or busy.
Generate Motion Sequence
Starts generation using the current prompts, constraints, and settings. Progress appears in the same panel.
Prompts
Build the motion in clear steps
＋ Add
Adds a new motion prompt to the sequence.
− Remove
Removes the selected prompt.
↑ / ↓ Reorder
Moves the selected prompt earlier or later in the sequence.
Prompt field
Describe the physical action in simple language, such as “A person walks forward and waves.”
Seconds
Sets how long the selected action should last.
Constraints
Guide important poses and body parts
Bone
Captures the selected Pose Mode bone as a position and rotation target at the current frame.
Section
Captures a full body, left hand, right hand, left foot, or right foot pose from the Core27 rig.
Body section menu
Chooses which body part is captured by Section or Preserve Existing Range.
Start / End
Sets the frame range used when preserving existing animation.
Preserve Existing Range
Samples the current animation in the chosen range and uses it as guidance.
Refresh
Updates the selected constraint from the character’s current pose.
Remove / Clear All
Removes one selected target or clears every constraint.
Enabled
Includes or ignores a constraint without deleting it.
Influence
Sets how strongly the selected target is followed, from 0 to 1.
Frame and transform values
Shows the target frame, position, and rotation. These values can be adjusted directly.
Generation Settings
Balance creativity, control, and repeatability
Text Strength
Controls how strongly the model follows the written prompt.
Constraint Strength
Controls the overall strength of all pose constraints.
Motion Cleanup
Applies post-processing to improve motion and reduce common contact problems.
Fixed Seed
Makes repeated runs more consistent so you can compare small setting changes.
Seed
Chooses the number used for a repeatable result when Fixed Seed is enabled.
Server
Manage local AI inference
Status
Shows whether the local server is ready and provides a short status message.
Start
Starts the local server manually. It also starts automatically when you generate.
Stop
Stops the server launched by the current Blender session when it is not busy.
Add-on Preferences
One-time setup and output behavior
Server URL
Sets the local Motion Flow API address or an advanced external compatible server.
Idle Timeout
Stops the managed server after a chosen number of unused minutes. Set it to 0 to disable automatic shutdown.
Generated Rig
Choose to overwrite animation on an existing Core27 rig or import a new rig for every result.
Setup Local Server
Installs the bundled Python runtime and required dependencies.
Model ZIP Path
Selects the downloaded model bundle without unpacking it manually.
Install Models from ZIP
Extracts the required motion and text models into the add-on folder.
Open Logs File
Opens the activity and error log for setup and troubleshooting.
04C — Retargeting
Retarget to your own character.
Motion Flow generates animation on a built-in Core27 armature—not SMPL-X. Use Auto-Rig Pro's Remap tool to transfer that motion to a custom character.
Prerequisite
Install the Auto-Rig Pro add-on in Blender. Its Remap feature is included with the add-on; see the official ARP Remap documentation for full details.
- 1
Generate your animation
Create your motion in Motion Flow, then select Generate Motion Sequence. The generated Core27 character and its baked keyframes are the Source armature.
- 2
Prepare your target character
Keep your custom rigged character—the Target armature—in the same scene. Auto-Rig Pro, Rigify, and custom rigs are all supported. Before mapping, zero the target armature object's Location and Rotation with Alt+G and Alt+R.
- 3
Open ARP Remap
In the 3D Viewport, open Sidebar (N) → ARP → Remap. Assign the Motion Flow Core27 armature as Source and your character as Target. Use Auto-Scale to match their scale, or scale manually with S.
- 4
Build and configure the bones list
Select Build Bones List. For compatible rigs, load a built-in preset such as Mixamo or Rokoko; otherwise map matching bones manually (for example, hips to hips and spine to spine). Mark the root bone—usually hips or pelvis—with Set as Root.
- 5
Match the rest poses
Both armatures must face the same direction in Edit Mode. If they differ, select Redefine Rest Pose on the Core27 source, tick Preserve, align mismatched limbs with Copy Selected Bones Rotation, then select Apply.
- 6
Retarget and refine
Choose Re-Target to transfer the animation. Use Interactive Tweaks for proportion differences, such as an additive pelvis location adjustment. When the mapping works, export it as a preset so later Core27 animations can be retargeted immediately.
The idea is simple
Spend less time building the first pass.
Spend more time shaping the motion.
License
Clear terms for your work.
Motion Flow is sold through Blender Market. Your use is covered by the license selected for this product at checkout. Motion Flow uses NVIDIA's ARDY model, which is provided under the ARDY Apache 2.0 license. Please review both licenses before using the add-on in a commercial project.
Credits
Built with great tools.
- Motion model
- NVIDIA ARDY
- 3D application
- Blender
- Character rig
- Core27