IAudioFormat::GetMinimumSizeForInitialChunk

Given the encoded buffer, returns the minimum number of bytes required to perform [ICompressedAudioInfo::ReadCompressedInfo()](API\Runtime\Engine\ICompressedAudioInfo\ReadCompressedInfo) or [IStreamedCompressedInfo::ParseHeader()](API\Runtime\Engine\IStreamedCompressedInfo\ParseHeader) for this file.