# FreeformRegion

The region of the scene that you want to monitor. Use this parameter if the region of interest is a shape other than a rectangle. To define a rectangular region, set the Region parameter instead.

Specify a list of points (at least three) followed by the units that you want to use. The top-left pixel has the coordinates `0,0` (x-coordinates represent the distance from the left side of the frame and y-coordinates represent the distance from the top of the frame). You can separate points and coordinates with commas or spaces. For example:

`FreeformRegion=x1,y1 x2,y2 ...xn,yn units`.

You can choose the following units:

- `percent` or `%` to use percentages of the image or video dimensions (x-coordinates as percentages of the width, y-coordinates as percentages of the height).
- `pixels` or `px` to use numbers of pixels.

Type: | Custom
Default: |
Required: | Yes, unless you set Region instead
Configuration Section: | TaskName
Example: | `FreeformRegion=40,25 65,25 75,75 25,75 percent`
See Also: | Region

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