---
title: kCMSampleBufferConduitNotification_InhibitOutputUntil
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmsamplebufferconduitnotification_inhibitoutputuntil
---

# kCMSampleBufferConduitNotification_InhibitOutputUntil

Posted on a conduit of sample buffers to announce a coming discontinuity.

## Declaration

```swift
let kCMSampleBufferConduitNotification_InhibitOutputUntil: CFString
```

## Discussion

Discussion A conduit of sample buffers (for example, a buffer queue; see CMBufferQueue) posts this notification when a discontinuity in decoding occurs. The userInfo dictionary for this notification contains the kCMSampleBufferConduitNotificationParameter_ResumeTag key, whose value specifies a tag that indicates when output should resume. The first sample buffer following the discontinuity should have a kCMSampleBufferAttachmentKey_ResumeOutput attachment whose value is the same number as the resume tag announced in this notification. The consumer should discard output data until it receives this sample buffer. If multiple notifications of this type are received, the last one indicates the resume tag.

## See Also

### Sample Buffer Conduit Notifications

- [kCMSampleBufferConduitNotification_ResetOutput](coremedia/kcmsamplebufferconduitnotification_resetoutput.md)
- [kCMSampleBufferConduitNotification_UpcomingOutputPTSRangeChanged](coremedia/kcmsamplebufferconduitnotification_upcomingoutputptsrangechanged.md)
- [kCMSampleBufferConduitNotificationParameter_UpcomingOutputPTSRangeMayOverlapQueuedOutputPTSRange](coremedia/kcmsamplebufferconduitnotificationparameter_upcomingoutputptsrangemayoverlapqueuedoutputptsrange.md)
- [kCMSampleBufferConduitNotificationParameter_MinUpcomingOutputPTS](coremedia/kcmsamplebufferconduitnotificationparameter_minupcomingoutputpts.md)
- [kCMSampleBufferConduitNotificationParameter_MaxUpcomingOutputPTS](coremedia/kcmsamplebufferconduitnotificationparameter_maxupcomingoutputpts.md)
- [kCMSampleBufferConduitNotificationParameter_ResumeTag](coremedia/kcmsamplebufferconduitnotificationparameter_resumetag.md)