<!--
{
  "availability" : [
    "iOS: 4.0.0 -",
    "iPadOS: 4.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.4.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 4.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreVideo",
  "identifier" : "/documentation/CoreVideo/CVTimeStampFlags",
  "metadataVersion" : "0.1.0",
  "role" : "Structure",
  "symbol" : {
    "kind" : "Structure",
    "modules" : [
      "Core Video"
    ],
    "preciseIdentifier" : "c:@E@CVTimeStampFlags"
  },
  "title" : "CVTimeStampFlags"
}
-->

# CVTimeStampFlags

```
struct CVTimeStampFlags
```

## Topics

### Properties

### Constants

[`bottomField`](/documentation/CoreVideo/CVTimeStampFlags/bottomField)

The timestamp represents the bottom lines of an interlaced image.

[`hostTimeValid`](/documentation/CoreVideo/CVTimeStampFlags/hostTimeValid)

The value in the host time field is valid.

[`isInterlaced`](/documentation/CoreVideo/CVTimeStampFlags/isInterlaced)

A convenience constant indicating that the timestamp is for an interlaced image.

[`rateScalarValid`](/documentation/CoreVideo/CVTimeStampFlags/rateScalarValid)

The value in the rate scalar field is valid.

[`smpteTimeValid`](/documentation/CoreVideo/CVTimeStampFlags/smpteTimeValid)

The value in the SMPTE time field is valid.

[`topField`](/documentation/CoreVideo/CVTimeStampFlags/topField)

The timestamp represents the top lines of an interlaced image.

[`videoHostTimeValid`](/documentation/CoreVideo/CVTimeStampFlags/videoHostTimeValid)

A convenience constant indicating that both the video time and host time fields are valid.

[`videoRefreshPeriodValid`](/documentation/CoreVideo/CVTimeStampFlags/videoRefreshPeriodValid)

The value in the video refresh period field is valid.

[`videoTimeValid`](/documentation/CoreVideo/CVTimeStampFlags/videoTimeValid)

The value in the video time field is valid.

### Initializers

[`init(rawValue:)`](/documentation/CoreVideo/CVTimeStampFlags/init(rawValue:))


---

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)