Contents

requestedAudioFormat

Indicates the audio format in which the client prefers to receive the output sample buffers.

Declaration

var requestedAudioFormat: CMFormatDescription? { get set }

Discussion

Must be a PCM format.

The output CMSampleBuffers' CMFormatDescription may not exactly match this format description, but it will match the parts described in the AudioStreamBasicDescription. The output format may differ from the requestedAudioFormat in its LPCM numeric type, channel interleaving and sample size. If any of these differs from the format in which you wish to operate, you can set up conversions between the format of audio sample buffers provided by the AVPlayerItemSampleBufferOutput and your required processing format by using AudioConverter or AVAudioEngine.

Specifying a PCM format is currently required. In the future it may be optional.