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# makeMutablePixelBuffer()

Vends a CVMutablePixelBuffer to use for rendering.
The buffer will have its kCVImageBufferCleanApertureKey and kCVImageBufferPixelAspectRatioKey attachments set to match the current composition processor properties.

```
func makeMutablePixelBuffer() throws -> CVMutablePixelBuffer
```

## Return Value

a CVMutablePixelBuffer to use for rendering.

## Discussion> Throws: insufficient memory or other system error.

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