private void ReadTimeStampAndFormatIndex(Chunk tsChunk, out int timeStamp, out int formatIdx)
{
byte[] tsIdxBytes = tsChunk.ReadChunkBytes(0, sizeof(int) * 2);
timeStamp = ChunkReader.BigEndianBytesToInt32(tsIdxBytes, 0);
formatIdx = ChunkReader.BigEndianBytesToInt32(tsIdxBytes, sizeof(int));
}