Required when you set Codec, under AudioDescriptions>CodecSettings, to the value FLAC.
Specify Bit depth (BitDepth), in bits per sample, to choose the encoding quality for this audio track.
Specify the number of channels in this output audio track. Valid values are 0, 1, and even numbers up to 8. Choose 0 to follow the number of channels from your input audio. Otherwise, manually choose from 1, 2, 4, 6, and 8.
Sample rate in Hz.