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

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

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