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# AVAssetWriterInputPixelBufferAdaptor

An object that appends video samples to an asset writer input.

```
class AVAssetWriterInputPixelBufferAdaptor
```

## Overview

A pixel buffer adaptor provides a pixel buffer pool that you use to allocate pixel buffers to the output file. Using the provided pool for buffer allocation is typically more efficient than managing your own pool.

## Topics

### Creating an adaptor

[`assetWriterInputPixelBufferAdaptorWithAssetWriterInput:sourcePixelBufferAttributes:`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/assetWriterInputPixelBufferAdaptorWithAssetWriterInput:sourcePixelBufferAttributes:)

Returns a new pixel buffer adaptor that appends pixel buffers to write to the output file.

[`init(assetWriterInput:sourcePixelBufferAttributes:)`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/init(assetWriterInput:sourcePixelBufferAttributes:))

Creates a new pixel buffer adaptor to receive pixel buffers for writing to the output file.

### Appending pixel buffers

[`append(_:withPresentationTime:)`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/append(_:withPresentationTime:))

Appends a pixel buffer to the adaptor.

### Accessing the pool

[`pixelBufferPool`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/pixelBufferPool)

A pool of pixel buffers to append to the adaptor’s input.

[`sourcePixelBufferAttributes`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/sourcePixelBufferAttributes)

The attributes of the pixel buffers that the pool contains.

### Inspecting a pixel buffer adaptor

[`assetWriterInput`](/documentation/AVFoundation/AVAssetWriterInputPixelBufferAdaptor/assetWriterInput)

The asset writer input to which the adaptor appends pixel buffers.


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