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# reducedResolution

A request to decode at a lower resolution than full-size.

```
optional var reducedResolution: CGSize { get set }
```

## Discussion

This optional property conveys a request for reduced resolution for decoding. Decoders that only support a fixed set of resolutions should pick the smallest resolution greater than or equal to the requested width and height. If the output <doc://com.apple.documentation/documentation/CoreVideo/cvpixelbuffer-q2e> is not in a format where reduced resolution decoding is supported, this setting should be disregarded. This property is set on the extension when a Video Toolbox client sets the <doc://com.apple.documentation/documentation/VideoToolbox/kVTDecompressionPropertyKey_ReducedResolutionDecode> property on the hosting <doc://com.apple.documentation/documentation/VideoToolbox/VTDecompressionSession>.

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