---
title: Audio Format Property Identifiers
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/1577853-audio-format-property-identifier
---

# Audio Format Property Identifiers

Constants for use with the AudioFormatGetPropertyInfo(_:_:_:_:) and AudioFormatGetProperty(_:_:_:_:_:) functions.

## Topics

### Constants

- [kAudioFormatProperty_FormatInfo](audiotoolbox/kaudioformatproperty_formatinfo.md)
- [kAudioFormatProperty_FormatName](audiotoolbox/kaudioformatproperty_formatname.md)
- [kAudioFormatProperty_EncodeFormatIDs](audiotoolbox/kaudioformatproperty_encodeformatids.md)
- [kAudioFormatProperty_DecodeFormatIDs](audiotoolbox/kaudioformatproperty_decodeformatids.md)
- [kAudioFormatProperty_FormatList](audiotoolbox/kaudioformatproperty_formatlist.md)
- [kAudioFormatProperty_ASBDFromESDS](audiotoolbox/kaudioformatproperty_asbdfromesds.md)
- [kAudioFormatProperty_ChannelLayoutFromESDS](audiotoolbox/kaudioformatproperty_channellayoutfromesds.md)
- [kAudioFormatProperty_OutputFormatList](audiotoolbox/kaudioformatproperty_outputformatlist.md)
- [kAudioFormatProperty_FirstPlayableFormatFromList](audiotoolbox/kaudioformatproperty_firstplayableformatfromlist.md)
- [kAudioFormatProperty_Encoders](audiotoolbox/kaudioformatproperty_encoders.md)
- [kAudioFormatProperty_Decoders](audiotoolbox/kaudioformatproperty_decoders.md)
- [kAudioFormatProperty_FormatIsVBR](audiotoolbox/kaudioformatproperty_formatisvbr.md)
- [kAudioFormatProperty_FormatIsExternallyFramed](audiotoolbox/kaudioformatproperty_formatisexternallyframed.md)
- [kAudioFormatProperty_AvailableEncodeBitRates](audiotoolbox/kaudioformatproperty_availableencodebitrates.md)
- [kAudioFormatProperty_AvailableEncodeSampleRates](audiotoolbox/kaudioformatproperty_availableencodesamplerates.md)
- [kAudioFormatProperty_AvailableEncodeChannelLayoutTags](audiotoolbox/kaudioformatproperty_availableencodechannellayouttags.md)
- [kAudioFormatProperty_AvailableEncodeNumberChannels](audiotoolbox/kaudioformatproperty_availableencodenumberchannels.md)
- [kAudioFormatProperty_ASBDFromMPEGPacket](audiotoolbox/kaudioformatproperty_asbdfrommpegpacket.md)
- [kAudioFormatProperty_BitmapForLayoutTag](audiotoolbox/kaudioformatproperty_bitmapforlayouttag.md)
- [kAudioFormatProperty_MatrixMixMap](audiotoolbox/kaudioformatproperty_matrixmixmap.md)
- [kAudioFormatProperty_ChannelMap](audiotoolbox/kaudioformatproperty_channelmap.md)
- [kAudioFormatProperty_NumberOfChannelsForLayout](audiotoolbox/kaudioformatproperty_numberofchannelsforlayout.md)
- [kAudioFormatProperty_ValidateChannelLayout](audiotoolbox/kaudioformatproperty_validatechannellayout.md)
- [kAudioFormatProperty_ChannelLayoutForTag](audiotoolbox/kaudioformatproperty_channellayoutfortag.md)
- [kAudioFormatProperty_TagForChannelLayout](audiotoolbox/kaudioformatproperty_tagforchannellayout.md)
- [kAudioFormatProperty_ChannelLayoutName](audiotoolbox/kaudioformatproperty_channellayoutname.md)
- [kAudioFormatProperty_ChannelLayoutSimpleName](audiotoolbox/kaudioformatproperty_channellayoutsimplename.md)
- [kAudioFormatProperty_ChannelLayoutForBitmap](audiotoolbox/kaudioformatproperty_channellayoutforbitmap.md)
- [kAudioFormatProperty_ChannelName](audiotoolbox/kaudioformatproperty_channelname.md)
- [kAudioFormatProperty_ChannelShortName](audiotoolbox/kaudioformatproperty_channelshortname.md)
- [kAudioFormatProperty_TagsForNumberOfChannels](audiotoolbox/kaudioformatproperty_tagsfornumberofchannels.md)
- [kAudioFormatProperty_PanningMatrix](audiotoolbox/kaudioformatproperty_panningmatrix.md)
- [kAudioFormatProperty_BalanceFade](audiotoolbox/kaudioformatproperty_balancefade.md)
- [kAudioFormatProperty_ID3TagSize](audiotoolbox/kaudioformatproperty_id3tagsize.md)
- [kAudioFormatProperty_ID3TagToDictionary](audiotoolbox/kaudioformatproperty_id3tagtodictionary.md)
- [kAudioFormatProperty_AreChannelLayoutsEquivalent](audiotoolbox/kaudioformatproperty_arechannellayoutsequivalent.md)
- [kAudioFormatProperty_ChannelLayoutHash](audiotoolbox/kaudioformatproperty_channellayouthash.md)
- [kAudioFormatProperty_FormatIsEncrypted](audiotoolbox/kaudioformatproperty_formatisencrypted.md)
- [kAudioFormatProperty_AvailableDecodeNumberChannels](audiotoolbox/kaudioformatproperty_availabledecodenumberchannels.md)
- [kAudioFormatProperty_FormatEmploysDependentPackets](audiotoolbox/kaudioformatproperty_formatemploysdependentpackets.md)

## See Also

### Constants

- [AudioBalanceFadeType](audiotoolbox/audiobalancefadetype.md)
- [Audio Codec Component Constants](audiotoolbox/1494086-audio-codec-component-constants.md)
- [Audio Codec Manufacturer and Implementation Types](audiotoolbox/1620448-audio-codec-manufacturer-and-imp.md)
- [AudioPanningMode](audiotoolbox/audiopanningmode.md)