<!--
{
  "availability" : [
    "iOS: 16.0.0 -",
    "iPadOS: 16.0.0 -",
    "macCatalyst: 16.0.0 -",
    "macOS: 10.10.0 -",
    "tvOS: 16.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 9.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVFoundation",
  "identifier" : "/documentation/AVFoundation/AVSampleBufferRequest",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "AVFoundation"
    ],
    "preciseIdentifier" : "c:objc(cs)AVSampleBufferRequest"
  },
  "title" : "AVSampleBufferRequest"
}
-->

# AVSampleBufferRequest

An object that describes a sample buffer creation request.

```
class AVSampleBufferRequest
```

## Topics

### Creating a request

[`-  initWithStartCursor:`](/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.

[`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.

[`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.

## Relationships

### Conforms To

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CVarArg`](/documentation/Swift/CVarArg)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)