---
title: AVCaptureTimecode.SourceType
framework: AVFoundation
role: symbol
role_heading: Enumeration
platforms: [iOS 26.0+, iPadOS 26.0+, Mac Catalyst 26.0+, macOS 26.0+, tvOS 26.0+]
path: avfoundation/avcapturetimecode/sourcetype-swift.enum
---

# AVCaptureTimecode.SourceType

Defines possible sources for generating timecode in using a timecode generator.

## Declaration

```swift
enum SourceType
```

## Topics

### Source types

- [AVCaptureTimecode.SourceType.external](avfoundation/avcapturetimecode/sourcetype-swift.enum/external.md)
- [AVCaptureTimecode.SourceType.frameCount](avfoundation/avcapturetimecode/sourcetype-swift.enum/framecount.md)
- [AVCaptureTimecode.SourceType.realTimeClock](avfoundation/avcapturetimecode/sourcetype-swift.enum/realtimeclock.md)

### Initializers

- [init(rawValue:)](avfoundation/avcapturetimecode/sourcetype-swift.enum/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Timecode generation

- [AVCaptureTimecodeGenerator](avfoundation/avcapturetimecodegenerator.md)
- [AVCaptureTimecodeGeneratorDelegate](avfoundation/avcapturetimecodegeneratordelegate.md)
- [AVCaptureTimecodeGenerator.SynchronizationStatus](avfoundation/avcapturetimecodegenerator/synchronizationstatus.md)
- [AVCaptureTimecode.Source](avfoundation/avcapturetimecode/source.md)
- [AVCaptureTimecode](avfoundation/avcapturetimecode.md)
- [advanced(_:by:)](avfoundation/avcapturetimecode/advanced(_:by:).md)
- [createMetadataSampleBuffer(from:associatedWithPresentationTimeStamp:)](avfoundation/avcapturetimecode/createmetadatasamplebuffer(from:associatedwithpresentationtimestamp:).md)
- [createMetadataSampleBuffer(from:forDuration:)](avfoundation/avcapturetimecode/createmetadatasamplebuffer(from:forduration:).md)