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# useDropFrameTimeCode

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

```
static let useDropFrameTimeCode: AVCaptionSettingsKey
```

## 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 <doc://com.apple.documentation/documentation/Swift/false>.

---

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