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# CMSampleBufferGetTotalSampleSize(_:)

Returns the total size in bytes of sample data in a sample buffer.

```
func CMSampleBufferGetTotalSampleSize(_ sbuf: CMSampleBuffer) -> Int
```

## Parameters

`sbuf`

The `CMSampleBuffer` being interrogated.

## Return Value

Total size in bytes of sample data in the `CMSampleBuffer`. If there are no sample sizes in this `CMSampleBuffer`, a size of 0 will be returned.

## Discussion

---

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