---
title: useDropFrameTimeCode
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avcaptionsettingskey/usedropframetimecode
---

# useDropFrameTimeCode

A key that identifies whether the system uses drop frame time code.

## Declaration

```swift
static let useDropFrameTimeCode: AVCaptionSettingsKey
```

## Discussion

Discussion Some formats, such as SCC, use time code notation to indicate the timing of a caption. Use the property to specify whether the system uses the drop frame time code or non-drop frame time code. The default is false.

## See Also

### Keys

- [mediaType](avfoundation/avcaptionsettingskey/mediatype.md)
- [mediaSubType](avfoundation/avcaptionsettingskey/mediasubtype.md)
- [timeCodeFrameDuration](avfoundation/avcaptionsettingskey/timecodeframeduration.md)