AudioFrameHeaderIdealisedFrameLengthInBytes Property

'ideal' length of a frame at this bitrate; returns double, disregards padding. returns null for 'free' bitrate files because parsing the audio coefficients to work out how long it should be is too much work. If you want to know how long the frame should be, ask the audio stream, not the header.

public double? IdealisedFrameLengthInBytes { get; }