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# CMTimeCodeFormatDescriptionCopyAsBigEndianTimeCodeDescriptionBlockBuffer(allocator:timeCodeFormatDescription:flavor:blockBufferOut:)

Copies the contents of a time code format description to a buffer in big-endian byte order.

```
func CMTimeCodeFormatDescriptionCopyAsBigEndianTimeCodeDescriptionBlockBuffer(allocator: CFAllocator?, timeCodeFormatDescription: CMTimeCodeFormatDescription, flavor: CMTimeCodeDescriptionFlavor?, blockBufferOut: UnsafeMutablePointer<CMBlockBuffer?>) -> OSStatus
```

## Parameters

`allocator`

Allocator to use for allocating the CMBlockBuffer object. May be NULL.

`timeCodeFormatDescription`

CMTimeCodeFormatDescription to be copied.

`flavor`

Reserved for future use. Pass NULL for QuickTime Movie or ISO flavor.

`blockBufferOut`

Receives new CMBlockBuffer containing TimeCodeDescription data structure in big-endian byte ordering.

## Discussion

On return, the caller owns the returned CMBlockBuffer, and must release it when done with it.

> Note:
> The dataRefIndex field of the SampleDescription is intentionally filled with garbage values (0xFFFF).  The caller must overwrite these values with a valid dataRefIndex if writing the SampleDescription to a QuickTime/ISO file.

---

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