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# kCMSampleBufferConduitNotificationParameter_ResumeTag

Specifies a tag to be attached to the first sample buffer following a discontinuity (type `CFNumber`).

```
let kCMSampleBufferConduitNotificationParameter_ResumeTag: CFString
```

## Discussion

A conduit of sample buffers posts the [`kCMSampleBufferConduitNotification_InhibitOutputUntil`](/documentation/CoreMedia/kCMSampleBufferConduitNotification_InhibitOutputUntil) notification when a discontinuity in decoding occurs. The value for this key will be attached to the first sample buffer following the discontinuity using the [`kCMSampleBufferAttachmentKey_ResumeOutput`](/documentation/CoreMedia/kCMSampleBufferAttachmentKey_ResumeOutput) attachment, indicating that clients should resume output.

---

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