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# kExtAudioFileProperty_CodecManufacturer

The manufacturer of the codec to be used by the extended audio file object. Value is a read/write `UInt32`.

```
var kExtAudioFileProperty_CodecManufacturer: ExtAudioFilePropertyID { get }
```

## Discussion

You must specify this property before setting the [`kExtAudioFileProperty_ClientDataFormat`](/documentation/AudioToolbox/kExtAudioFileProperty_ClientDataFormat) property, which in turn triggers the creation of the codec. Use this property in iOS to choose between a hardware or software encoder, by specifying [`kAppleHardwareAudioCodecManufacturer`](/documentation/AudioToolbox/kAppleHardwareAudioCodecManufacturer) or [`kAppleSoftwareAudioCodecManufacturer`](/documentation/AudioToolbox/kAppleSoftwareAudioCodecManufacturer).

---

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