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# kVTCompressionPropertyKey_HorizontalDisparityAdjustment

A value that indicates a relative shift of the left and right images, which changes the zero parallax plane.

```
let kVTCompressionPropertyKey_HorizontalDisparityAdjustment: CFString
```

## Discussion

This property sets a value for the <doc://com.apple.documentation/documentation/CoreMedia/kCMFormatDescriptionExtension_HorizontalDisparityAdjustment> format description on the output samples. The value is a 32-bit integer, measured over the range of `-10000` to `10000`, that maps to a uniform range of `-1.0` to `1.0`.

This property is optional. Only specify a disparity adjustment, including 0, when you know the specific value.

---

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