> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# WanMoveTracksFromCoords - ComfyUI Built-in Node Documentation

> Complete documentation for the WanMoveTracksFromCoords node in ComfyUI. Learn its inputs, outputs, parameters and usage.

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/WanMoveTracksFromCoords/en.md)

The WanMoveTracksFromCoords node creates a set of motion tracks from a list of coordinate points. It converts a JSON-formatted string of coordinates into a tensor format that can be used by other video processing nodes, and can optionally apply a mask to control the visibility of tracks over time.

## Inputs

| Parameter      | Data Type | Required | Range | Description                                                                                                         |
| -------------- | --------- | -------- | ----- | ------------------------------------------------------------------------------------------------------------------- |
| `track_coords` | STRING    | Yes      | N/A   | A JSON-formatted string containing the coordinate data for the tracks. The default value is an empty list (`"[]"`). |
| `track_mask`   | MASK      | No       | N/A   | An optional mask. When provided, the node uses it to determine the visibility of each track per frame.              |

**Note:** The `track_coords` input expects a specific JSON structure. It should be a list of tracks, where each track is a list of frames, and each frame is an object with `x` and `y` coordinates. The number of frames must be consistent across all tracks.

## Outputs

| Output Name    | Data Type | Description                                                                                          |
| -------------- | --------- | ---------------------------------------------------------------------------------------------------- |
| `tracks`       | TRACKS    | The generated track data, containing the path coordinates and visibility information for each track. |
| `track_length` | INT       | The total number of frames in the generated tracks.                                                  |