public VobSubPack(byte[] buffer, IdxParagraph idxLine)
        {
            _buffer = buffer;
            IdxLine = idxLine;

            if (VobSubParser.IsMpeg2PackHeader(buffer))
            {
                Mpeg2Header = new Mpeg2Header(buffer);
                PacketizedElementaryStream = new PacketizedElementaryStream(buffer, Mpeg2Header.Length);
            }
            else if (VobSubParser.IsPrivateStream1(buffer, 0))
            {
                PacketizedElementaryStream = new PacketizedElementaryStream(buffer, 0);
            }
        }