ADBaseLibrary.Matroska.Matroska.MoveTagInfoToTracks C# (CSharp) Method

        internal static void MoveTagInfoToTracks(Container c)
        {
            //Moving Title and Language tags to tracks if they exists
            List<EbmlGeneric> tracks = c.FindAll(Ids.MATROSKA_ID_TRACKENTRY);
            List<EbmlGeneric> tags = c.FindAll(Ids.MATROSKA_ID_TAG);
            foreach (EbmlMaster t in tags)
            {
                EbmlMaster tt = (EbmlMaster)t.FindFirst(Ids.MATROSKA_ID_TAGTARGETS);
                if (tt != null)
                {
                    EbmlMaster sp = (EbmlMaster)t.FindFirst(Ids.MATROSKA_ID_SIMPLETAG);
                    EbmlUint jk = (EbmlUint)tt.FindFirst(Ids.MATROSKA_ID_TAGTARGETS_TRACKUID);
                    if (jk != null)
                    {
                        EbmlUtf8 name = (EbmlUtf8)sp.FindFirst(Ids.MATROSKA_ID_TAGNAME);
                        EbmlUtf8 value = (EbmlUtf8)sp.FindFirst(Ids.MATROSKA_ID_TAGSTRING);
                        if (name != null && value != null)
                        {
                            string nm = name.Value.ToUpper(CultureInfo.InvariantCulture);
                            string vl = value.Value;
                            if (nm == "LANGUAGE" || nm == "TITLE" || nm == "NAME")
                            {
                                foreach (EbmlMaster j in tracks)
                                {
                                    EbmlUint u = (EbmlUint)j.FindFirst(Ids.MATROSKA_ID_TRACKUID);
                                    if (u.Value == jk.Value)
                                    {
                                        EbmlUtf8 change;
                                        if (nm == "TITLE" || nm == "NAME")
                                        {
                                            change = (EbmlUtf8)j.FindFirst(Ids.MATROSKA_ID_TRACKNAME);
                                            if (change == null)
                                            {
                                                change = new EbmlUtf8 { Id = Ids.MATROSKA_ID_TRACKNAME };
                                                j.Value.Add(change);
                                            }
                                        }
                                        else
                                        {
                                            change = (EbmlUtf8)j.FindFirst(Ids.MATROSKA_ID_TRACKLANGUAGE);
                                            if (change == null)
                                            {
                                                change = new EbmlUtf8 { Id = Ids.MATROSKA_ID_TRACKLANGUAGE };
                                                j.Value.Add(change);
                                            }
                                        }
                                        change.Value = vl;
                                        j.Value.Sort();
                                        break;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }