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# CMIOExtensionStream.DiscontinuityFlags

Constants that specify the types of discontinuities that can occur in a media stream.

```
struct DiscontinuityFlags
```

## Topics

### Discontinuity Flags

[`CMIOExtensionStreamDiscontinuityFlagNone`](/documentation/CoreMediaIO/CMIOExtensionStreamDiscontinuityFlags/CMIOExtensionStreamDiscontinuityFlagNone)

A flag that indicates there’s no discontinuity in the stream.

[`unknown`](/documentation/CoreMediaIO/CMIOExtensionStream/DiscontinuityFlags/unknown)

A flag that indicates a stream discontinuity due to an unknown reason.

[`time`](/documentation/CoreMediaIO/CMIOExtensionStream/DiscontinuityFlags/time)

A flag that indicates a time discontinuity in the stream.

[`sampleDropped`](/documentation/CoreMediaIO/CMIOExtensionStream/DiscontinuityFlags/sampleDropped)

A flag that indicates a discontinuity in the stream due to a dropped frame.

### Initializers

[`init(rawValue:)`](/documentation/CoreMediaIO/CMIOExtensionStream/DiscontinuityFlags/init(rawValue:))

Creates a flag with an integer value.


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