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# AVCaptionConversionTimeRangeAdjustment

An object that describes an adjustment to the time range of one or more captions.

```
class AVCaptionConversionTimeRangeAdjustment
```

## Topics

### Accessing time offsets

[`startTimeOffset`](/documentation/AVFoundation/AVCaptionConversionTimeRangeAdjustment/startTimeOffset)

The time value by which the system offsets the start times of captions to correct a problem.

[`durationOffset`](/documentation/AVFoundation/AVCaptionConversionTimeRangeAdjustment/durationOffset)

The time value by which the system offsets the durations of captions to correct a problem.


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