---
title: "CMTimeCodeFormatDescriptionCreateFromBigEndianTimeCodeDescriptionBlockBuffer(allocator:bigEndianTimeCodeDescriptionBlockBuffer:flavor:formatDescriptionOut:)"
framework: coremedia
role: symbol
role_heading: Function
path: "coremedia/cmtimecodeformatdescriptioncreatefrombigendiantimecodedescriptionblockbuffer(allocator:bigendiantimecodedescriptionblockbuffer:flavor:formatdescriptionout:)"
---

# CMTimeCodeFormatDescriptionCreateFromBigEndianTimeCodeDescriptionBlockBuffer(allocator:bigEndianTimeCodeDescriptionBlockBuffer:flavor:formatDescriptionOut:)

Creates a time code format description from a big-endian time code description data structure in a buffer.

## Declaration

```swift
func CMTimeCodeFormatDescriptionCreateFromBigEndianTimeCodeDescriptionBlockBuffer(allocator: CFAllocator?, bigEndianTimeCodeDescriptionBlockBuffer timeCodeDescriptionBlockBuffer: CMBlockBuffer, flavor: CMTimeCodeDescriptionFlavor?, formatDescriptionOut: UnsafeMutablePointer<CMTimeCodeFormatDescription?>) -> OSStatus
```

## Parameters

- `allocator`: Allocator to use for allocating the CMTimeCodeFormatDescription object. May be NULL.
- `timeCodeDescriptionBlockBuffer`: CMBlockBuffer containing TimeCodeDescription data structure in big-endian byte ordering.
- `flavor`: Reserved for future use. Pass NULL for QuickTime Movie or ISO flavor.
- `formatDescriptionOut`: Receives new CMTimeCodeFormatDescription.

## See Also

### Working with Time Code Descriptions

- [CMTimeCodeDescriptionFlavor](coremedia/cmtimecodedescriptionflavor.md)
- [CMTimeCodeFormatDescriptionCreate(allocator:timeCodeFormatType:frameDuration:frameQuanta:flags:extensions:formatDescriptionOut:)](coremedia/cmtimecodeformatdescriptioncreate(allocator:timecodeformattype:frameduration:framequanta:flags:extensions:formatdescriptionout:).md)
- [CMTimeCodeFormatDescriptionGetFrameDuration(_:)](coremedia/cmtimecodeformatdescriptiongetframeduration(_:).md)
- [CMTimeCodeFormatDescriptionGetFrameQuanta(_:)](coremedia/cmtimecodeformatdescriptiongetframequanta(_:).md)
- [CMTimeCodeFormatDescriptionGetTimeCodeFlags(_:)](coremedia/cmtimecodeformatdescriptiongettimecodeflags(_:).md)
- [CMTimeCodeFormatDescriptionCopyAsBigEndianTimeCodeDescriptionBlockBuffer(allocator:timeCodeFormatDescription:flavor:blockBufferOut:)](coremedia/cmtimecodeformatdescriptioncopyasbigendiantimecodedescriptionblockbuffer(allocator:timecodeformatdescription:flavor:blockbufferout:).md)
- [CMTimeCodeFormatDescriptionCreateFromBigEndianTimeCodeDescriptionData(allocator:bigEndianTimeCodeDescriptionData:size:flavor:formatDescriptionOut:)](coremedia/cmtimecodeformatdescriptioncreatefrombigendiantimecodedescriptiondata(allocator:bigendiantimecodedescriptiondata:size:flavor:formatdescriptionout:).md)
- [CMSwapBigEndianTimeCodeDescriptionToHost(_:_:)](coremedia/cmswapbigendiantimecodedescriptiontohost(_:_:).md)
- [CMSwapHostEndianTimeCodeDescriptionToBig(_:_:)](coremedia/cmswaphostendiantimecodedescriptiontobig(_:_:).md)