What is Trajectory Control?
Go beyond the old ways of text prompts to add movement to objects. Trajectory Control lets you dictate exactly how a subject moves This allows for intuitive, hands-on direction and produces smoother, more natural motion. Only Marey offers this level of natural control.
How it works
Trajectory Control puts you in the director's chair. Take any existing image and chart motion paths over it, layering changes to your exact specifications. Dramatically alter poses, exaggerate motion to greater effect, or even combine several motion paths into one composition.
Enable Trajectory Control
Select Trajectory Control from the Controls menu in the prompting interface
Select an Input Video
Click 'Input Image'.
From the 'Select Image' window, upload or select the image you intent to add one or more motion paths to. Once selected, click 'Open'
Create motion layers
From the main UI interface, click 'Begin'
IMPORTANT: add 2-3 non-motion layers by adding a layer and simply placing the dot by itself on a part of the image you do not want to move i.e. the ground or a fixed object
A new 'Trajectory Control' window opens containing a canvas showing your input image and a prompt to 'Add Layer'.
Click 'Add Layer'. When you add a layer a timeline will appear under your canvas with a prompt to 'Place a point on the canvas to begin'.
Layers are where you'll create individual motion paths. You can add a single layer, or use several together on a single image.
Create motion paths
Hover your mouse over any point on the canvas; notice that a '+' cursor appears. Left-click on an area of your image that you want to start a motion path from. A red dot will appear on your canvas at that point, and a playhead with a diamond marker (a keyframe) will appear on frame 1 in the timeline below.
Drag your playhead forward to where you want your next motion path checkpoint to be set. Placing your next checkpoint closer to your first keyframe can create faster motion in your video. Placing it father away will create slower motion.
In this example, we'll move the checkpoint to frame 70 in the timeline.
On the canvas, left-click on an area to set your next motion checkpoint (your next keyframe). Think of this as creating a path from Point A to Point B for your subject.
In the screenshot above we've set our new checkpoint to the left of the subject, indicating that we want the man to move to the edge of the frame.
Render your changes
Click 'Render' when you're satisfied with the motion paths you've created for your subject.
Add a prompt for your video
Write a prompt that describes the video you want to create and click 'Generate'.
Here's a quick walkthrough on Trajectory Control: