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# trimDurationAtEnd

The duration that should be removed at the end of the sample buffer, after decoding.

```
static let trimDurationAtEnd: CVAttachmentKeyDefinitionWithDefault<CMSampleBufferAttachmentKeyDefinitions.ShouldPropagate, CMTime>
```

## Discussion

The getter returns the default value of [`zero`](/documentation/CoreMedia/CMTime/zero) (nothing removed) if this attachment is not present.

---

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