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# AVSampleBufferRequest

An object that describes a sample buffer creation request.

```
class AVSampleBufferRequest
```

## Topics

### Creating a request

[`init(start:)`](/documentation/AVFoundation/AVSampleBufferRequest/init(start:))

Creates a newly allocated sample buffer request with the specified sample cursor.

### Configuring sample buffer request parameters

[`direction`](/documentation/AVFoundation/AVSampleBufferRequest/direction-swift.property)

The buffer sample direction.

[`AVSampleBufferRequest.Direction`](/documentation/AVFoundation/AVSampleBufferRequest/Direction-swift.enum)

The modes that describe the buffer request direction.

[`limitCursor`](/documentation/AVFoundation/AVSampleBufferRequest/limitCursor)

The limiting position for sample loading.

[`maxSampleCount`](/documentation/AVFoundation/AVSampleBufferRequest/maxSampleCount)

The maximum number of samples to load.

[`mode`](/documentation/AVFoundation/AVSampleBufferRequest/mode-swift.property)

The sample buffer request mode.

[`AVSampleBufferRequest.Mode`](/documentation/AVFoundation/AVSampleBufferRequest/Mode-swift.enum)

The modes in which a sample buffer generator processes a request.

[`overrideTime`](/documentation/AVFoundation/AVSampleBufferRequest/overrideTime)

The deadline for sample data and output PTS for the sample buffer.

[`preferredMinSampleCount`](/documentation/AVFoundation/AVSampleBufferRequest/preferredMinSampleCount)

The preferred minimum number of samples to load.

[`startCursor`](/documentation/AVFoundation/AVSampleBufferRequest/startCursor)

The starting cursor position.


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