---
title: "CMBufferQueueGetMinDecodeTimeStamp(_:)"
framework: coremedia
role: symbol
role_heading: Function
path: "coremedia/cmbufferqueuegetmindecodetimestamp(_:)"
---

# CMBufferQueueGetMinDecodeTimeStamp(_:)

Gets the earliest decode timestamp of a buffer queue.

## Declaration

```swift
func CMBufferQueueGetMinDecodeTimeStamp(_ queue: CMBufferQueue) -> CMTime
```

## Parameters

- `queue`: CMBufferQueue being interrogated.

## Return Value

Return Value The earliest decode timestamp of the interrogated CMBufferQueue.

## Discussion

Discussion The search for earliest decode timstamp is performed in this API.                If you know your queue is in decode order, Accessing CMBufferQueue                is a faster alternative.  If the getDecodeTimeStamp callback is                NULL, kCMTimeInvalid will be returned.

## See Also

### Inspecting Duration and Timing

- [CMBufferQueueGetDuration(_:)](coremedia/cmbufferqueuegetduration(_:).md)
- [CMBufferQueueGetFirstDecodeTimeStamp(_:)](coremedia/cmbufferqueuegetfirstdecodetimestamp(_:).md)
- [CMBufferQueueGetMinPresentationTimeStamp(_:)](coremedia/cmbufferqueuegetminpresentationtimestamp(_:).md)
- [CMBufferQueueGetFirstPresentationTimeStamp(_:)](coremedia/cmbufferqueuegetfirstpresentationtimestamp(_:).md)
- [CMBufferQueueGetEndPresentationTimeStamp(_:)](coremedia/cmbufferqueuegetendpresentationtimestamp(_:).md)
- [CMBufferQueueGetMaxPresentationTimeStamp(_:)](coremedia/cmbufferqueuegetmaxpresentationtimestamp(_:).md)
- [CMBufferQueueGetCallbacksForSampleBuffersSortedByOutputPTS()](coremedia/cmbufferqueuegetcallbacksforsamplebufferssortedbyoutputpts().md)
- [CMBufferQueueGetCallbacksForUnsortedSampleBuffers()](coremedia/cmbufferqueuegetcallbacksforunsortedsamplebuffers().md)