How to Use Trajectory Control: Wan 2.2 14B Fun Control
In the previous article, I introduced “Wan 2.2 14B Fun Control”. This time, I’ll focus on “Trajectory Control”, which I couldn’t cover last time, and clearly explain how it works and when to use it. It isn’t explicitly stated in the official docs, but it’s easiest to understand as a control concept similar to Wan-Move (Latent Trajectory Guidance) and ATI (Any Trajectory Instruction) . Learn Trajectory Control and start creating the exact motion you want.
Trajectory Control Basics in Wan 2.2 14B Fun Control
Trajectory Control in Wan 2.2 14B Fun Control is a feature that lets you directly instruct a video-generation AI “what moves, where it moves, and how it moves” by drawing a line (trajectory) .
For a specific point on a still image (an object, a camera viewpoint, etc.) , you provide vector information (a trajectory) that says “Move along this path from the first frame to the last frame,” and it generates a video that follows it.
Key Features- Intuitive control: With tools like Spline Path Control, you can place points and draw a line on the image to specify motion.
- Local control: Instead of affecting the whole frame, you can do “partial control”, like moving only a character’s arm or only a car in the background.
- Camera move direction: By drawing an overall trajectory, you can simulate complex camera moves such as pans, zooms, and dolly shots.
How to Create a Trajectory Control Video
Before creating a control video, check out the 🔗“Wan-Move” examples and the 🔗arXiv paper. Wan-Move and ATI aren’t exactly the same, but they’re useful references for how to place markers and how to write prompts.
There are several ways to create control videos for Wan 2.2 14B Fun Control. Here, I’ll introduce “Spline Path Control”, a free and easy option.
Spline Path Control v2.3
This app lets you draw marker motion on top of a reference image and export it as a Trajectory Control video.
Download the latest ZIP from the Releases page and open index.html, or open the 🔗online page.
For this tutorial, I’ll animate the following image.
How to Use Spline Path Control v2.3
The workflow is very simple: load the reference image, then draw a spline along the point you want to move. Let’s go through the settings in order.
Spline Settings
- Start Frame: Set the start frame of the selected spline.
- Total Frame: Set the end frame of the selected spline.
- Tension: Increasing the value changes the spline from a straight line to a curve.
- Hide When Done: When checked, the marker is hidden when the spline ends.
- PATH EASING: Set easing for the marker’s motion, from linear to non-linear easing with acceleration/deceleration.
Shape Settings
Marker display settings. ✅After placing all splines, hold Ctrl to select all and batch-edit everything except scale for faster adjustments.
- Shape: Choose the marker shape.
- Fill: Choose the fill color.
- Border: Choose the border color.
- Width: Set the border thickness.
- Size: Set the size.
- SCALE OVER TIME: Scale the marker over frames (time) . ✅Use this when you want to zoom the subject.
Canvas Settings
In most cases, it will automatically match the size of the loaded image. If your image is much larger than a suitable size for Wan 2.2 14B Fun Control, resize it down to your generation resolution first before creating splines. ⚠️If the control video is too large, markers may become harder to recognize after it’s resized later.
- Width: Set the canvas width.
- Height: Set the canvas height.
- Update Canvas: Update the canvas.
Background Settings
When you load a reference image, the canvas size is updated automatically.
- Choose File: Load the reference image.
Spline Editing
- Add Spline: Add a new spline.
- Delete Spline: Delete the selected spline.
- Add Point: Add a point to the selected spline. ✅You can also add one by double-clicking on the spline line.
- Delete Point/Anchor: Delete the selected point.
- Add Ancor: Add a new anchor. ✅Use anchors when there’s an object you don’t want to move.
- Clone: Clone the selected spline. ✅You can also select multiple splines and clone them together.
- Clear All: Delete all splines and anchors to reset to the initial state.
- Undo: Undo the previous action.
- Redo: Redo the undone action.
Preview Settings
- Play Once: Play the marker animation once.
- Loop Preview: Enable looping for the animation preview.
Export Settings
- Export FPS: Set the FPS for the control video.
- Length (in frames): Set the number of frames.
- Export Video: Export the video.
- Cancel Export: Cancel the export in progress.
- Export Canvas: Save the created splines and anchors.
- Import Canvas: Load saved splines and anchors.
How to Export the Control Video
When exporting the video, pay attention to the number of frames.
The default setting is 80, but you should match it to the frame count you’ll use in Wan 2.2 14B Fun Control. This time I exported with 81 frames.
The default marker settings can work, but sometimes it wasn’t detected, so I set Fill to White (255,255,255) and Width to 0.
Here is the completed control video. While shaking her head left and right, her fingertip moves in a circular motion.
For clarity, I overlaid it on the reference image.
If you want more fine-grained control, try creating it with Adobe After Effects, etc.
Next, let’s animate it in Wan 2.2 14B Fun Control using the completed Trajectory Control video.
Trajectory Control Workflow for Wan 2.2 14B Fun Control
This workflow is basically the same Wan 2.2 14B Fun Control workflow introduced in the previous article. (Some nodes are changed to improve quality.) The workflow and input assets are published on Patreon, and only paid supporters can view and download them.
Final Result
Here’s the final result after upscaling and frame interpolation.
How to Get Better Trajectory Control Results
The Trajectory Control feature of Wan2.2-Fun-A14B-Control can sometimes cause motion guidance artifacts, where features derived from reference guides unintentionally affect background elements or unrelated objects. This is because the control mechanism operates at a semantic latent level, which may lead to motion propagation beyond the intended target. For users who require more precise and deterministic control over points and trajectories, ATI (Any Trajectory Instruction) is a more suitable solution.
ATI gained significant attention through demonstration videos in which entire urban structures, such as buildings across a city, were moved coherently in vertical directions. Such large-scale, background-driven trajectory control is a core strength of ATI and is difficult to reproduce reliably using Wan2.2-Fun-A14B-Control, which is primarily optimized for character-centric and localized motion control.
Conclusion
The strength of Trajectory Controlis that you can specify “what moves, where it goes, and how it moves” by drawing a trajectory. With Spline Path Control, you can create marker trajectories that match your reference image and export them directly as a control video.
- Creating the control video: Match the image size to your generation resolution, and match the frame count to your Wan 2.2 14B Fun Control settings.
- Marker adjustments: If detection is unstable, try setting Fill to White (255,255,255) and Width to 0.
- Higher-precision control: If marker bleed-through or unintended influence is an issue, consider using Wan-Move or ATI.
Once you get comfortable with Trajectory Control, it becomes easier to design not only subject motion, but also camera moves like pans and zooms.
Thank you for reading to the end.
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