---
title: "CVDisplayLinkGetOutputVideoLatency(_:)"
framework: corevideo
role: symbol
role_heading: Function
path: "corevideo/cvdisplaylinkgetoutputvideolatency(_:)"
---

# CVDisplayLinkGetOutputVideoLatency(_:)

Retrieves the nominal latency of a display link.

## Declaration

```swift
func CVDisplayLinkGetOutputVideoLatency(_ displayLink: CVDisplayLink) -> CVTime
```

## Parameters

- `displayLink`: The display link whose latency value you want to obtain.

## Return Value

Return Value A CVTime structure that holds the latency value. This value may be indefinite.

## Discussion

Discussion This call allows you to retrieve the device’s built-in output latency. For example, an NTSC device with one frame of latency might report back 1001/30000 or 2002/60000.

## See Also

### Inspecting Display Links

- [CVDisplayLinkGetCurrentCGDisplay(_:)](corevideo/cvdisplaylinkgetcurrentcgdisplay(_:).md)
- [CVDisplayLinkGetCurrentTime(_:_:)](corevideo/cvdisplaylinkgetcurrenttime(_:_:).md)
- [CVDisplayLinkTranslateTime(_:_:_:)](corevideo/cvdisplaylinktranslatetime(_:_:_:).md)
- [CVDisplayLinkGetActualOutputVideoRefreshPeriod(_:)](corevideo/cvdisplaylinkgetactualoutputvideorefreshperiod(_:).md)
- [CVDisplayLinkGetNominalOutputVideoRefreshPeriod(_:)](corevideo/cvdisplaylinkgetnominaloutputvideorefreshperiod(_:).md)
- [CVDisplayLinkIsRunning(_:)](corevideo/cvdisplaylinkisrunning(_:).md)
- [CVDisplayLinkGetTypeID()](corevideo/cvdisplaylinkgettypeid().md)