/// <summary>
        /// Export a MacGui style plist preset.
        /// </summary>
        /// <param name="path">
        /// The path.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        public static void Export(string path, Preset preset)
        {
            EncodeTask parsed = QueryParserUtility.Parse(preset.Query);
            XmlTextWriter xmlWriter = new XmlTextWriter(path, Encoding.UTF8) { Formatting = Formatting.Indented };

            // Header
            xmlWriter.WriteStartDocument();
            xmlWriter.WriteDocType("plist", "-//Apple//DTD PLIST 1.0//EN",
                                @"http://www.apple.com/DTDs/PropertyList-1.0.dtd", null);

            xmlWriter.WriteStartElement("plist");
            xmlWriter.WriteStartElement("array");

            // Add New Preset Here. Can write multiple presets here if required in future.
            WritePreset(xmlWriter, parsed, preset);

            // Footer
            xmlWriter.WriteEndElement();
            xmlWriter.WriteEndElement();

            xmlWriter.WriteEndDocument();

            // Closeout
            xmlWriter.Close();
        }

        /// <summary>
        /// Export a MacGui style plist preset.
        /// </summary>
        /// <param name="path">
        /// The path.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="build">
        /// The build.PictureModulusPictureModulus
        /// </param>
        public static void Export(string path, Preset preset, string build)
        {
            if (string.IsNullOrEmpty(path))
            {
                return;
            }

            EncodeTask parsed = new EncodeTask(preset.Task);
            using (XmlTextWriter xmlWriter = new XmlTextWriter(path, Encoding.UTF8) { Formatting = Formatting.Indented })
            {
                // Header
                xmlWriter.WriteStartDocument();
                xmlWriter.WriteDocType(
                    "plist", "-//Apple//DTD PLIST 1.0//EN", @"http://www.apple.com/DTDs/PropertyList-1.0.dtd", null);

                xmlWriter.WriteStartElement("plist");
                xmlWriter.WriteStartElement("array");

                // Add New Preset Here. Can write multiple presets here if required in future.
                WritePreset(xmlWriter, parsed, preset, build);

                // Footer
                xmlWriter.WriteEndElement();
                xmlWriter.WriteEndElement();

                xmlWriter.WriteEndDocument();

                // Closeout
                xmlWriter.Close();
            }
        }

 /// <summary>
 /// Set the Preset Crop Warning Label
 /// </summary>
 /// <param name="selectedPreset">
 /// The Selected preset
 /// </param>
 public void SetPresetCropWarningLabel(Preset selectedPreset)
 {
     if (this.check_customCrop.Checked)
     {
         lbl_presetCropWarning.Visible = true;
         if (selectedPreset != null && selectedPreset.CropSettings == false) lbl_presetCropWarning.Visible = false;
         else if (selectedPreset == null) lbl_presetCropWarning.Visible = false;
     }
     else
     {
         lbl_presetCropWarning.Visible = false;
     }
 }

        /// <summary>
        /// The create preset.
        /// </summary>
        /// <param name="plist">
        /// The plist.
        /// </param>
        /// <returns>
        /// The <see cref="Preset"/>.
        /// </returns>
        public static Preset CreatePreset(PList plist)
        {
            Preset preset = new Preset { Task = new EncodeTask(), Category = PresetService.UserPresetCatgoryName };

            // Parse the settings out.
            foreach (var item in plist)
            {
                if (item.Key == "AudioList")
                {
                    List<AudioTrack> tracks = ParseAudioTracks(item.Value);
                    preset.Task.AudioTracks = new ObservableCollection<AudioTrack>(tracks);
                }
                else
                {
                    ParseSetting(item, preset);
                }
            }

            // Handle the PictureDecombDeinterlace key
            if (preset.UseDeinterlace)
            {
                preset.Task.Decomb = Decomb.Off;
                preset.Task.CustomDecomb = string.Empty;
            }

            // Depending on the selected preset options, we may need to change some settings around.
            // If the user chose not to use fitlers, remove them.
            if (!preset.UsePictureFilters)
            {
                preset.Task.Detelecine = Detelecine.Off;
                preset.Task.Denoise = Denoise.Off;
                preset.Task.Deinterlace = Deinterlace.Off;
                preset.Task.Decomb = Decomb.Off;
                preset.Task.Deblock = 0;
                preset.Task.Grayscale = false;
            }

            // IF we are using Source Max, Set the Max Width / Height values.
            if (preset.PictureSettingsMode == PresetPictureSettingsMode.SourceMaximum)
            {
                preset.Task.MaxWidth = preset.Task.Height;
                preset.Task.MaxHeight = preset.Task.Width;
            }

            return preset;
        }

        /// <summary>
        /// Select the selected preset and setup the GUI
        /// </summary>
        private void selectPreset()
        {
            if (treeView_presets.SelectedNode != null)
            {
                // Ok, so, we've selected a preset. Now we want to load it.
                string presetName = treeView_presets.SelectedNode.Text;
                Preset preset = presetHandler.GetPreset(presetName);
                if (preset != null)
                {
                    string query = presetHandler.GetPreset(presetName).Query;

                    if (query != null)
                    {
                        // Ok, Reset all the H264 widgets before changing the preset
                        x264Panel.Reset2Defaults();

                        // Now load the preset
                        PresetLoader.LoadPreset(this, preset);

                        // The x264 widgets will need updated, so do this now:
                        x264Panel.StandardizeOptString();
                        x264Panel.SetCurrentSettingsInPanel();

                        // Finally, let this window have a copy of the preset settings.
                        this.currentlySelectedPreset = preset;
                        PictureSettings.SetPresetCropWarningLabel(preset);
                    }
                }
            }
        }

        /// <summary>
        /// The setup languages.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        private void SetupLanguages(Preset preset)
        {
            // Step 1, Set the behaviour mode
            this.AudioBehaviours.SelectedBehaviour = AudioBehaviourModes.None;
            this.AudioBehaviours.SelectedLangauges.Clear();

            // Step 2, Get all the languages
            IDictionary<string, string> langList = LanguageUtilities.MapLanguages();
            langList = (from entry in langList orderby entry.Key ascending select entry).ToDictionary(pair => pair.Key, pair => pair.Value);

            // Step 3, Setup Available Languages
            this.AvailableLanguages.Clear();
            foreach (string item in langList.Keys)
            {
                this.AvailableLanguages.Add(item);
            }

            // Step 4, Set the Selected Languages
            if (preset != null && preset.AudioTrackBehaviours != null)
            {
                this.AudioBehaviours.SelectedBehaviour = preset.AudioTrackBehaviours.SelectedBehaviour;

                foreach (string selectedItem in preset.AudioTrackBehaviours.SelectedLangauges)
                {
                    this.AvailableLanguages.Remove(selectedItem);
                    this.AudioBehaviours.SelectedLangauges.Add(selectedItem);
                }
            }
        }

        /// <summary>
        /// RMenu - Save Changes to Preset
        /// </summary>
        /// <param name="sender">
        /// The sender.
        /// </param>
        /// <param name="e">
        /// The e.
        /// </param>
        private void pmnu_saveChanges_Click(object sender, EventArgs e)
        {
            if (this.selectedTitle == null)
            {
                MessageBox.Show(
                            "Please scan a source before trying to update a preset.",
                            "Error",
                            MessageBoxButtons.OK,
                            MessageBoxIcon.Error);
                return;
            }

            DialogResult result =
                MessageBox.Show(
                    "Do you wish to include picture settings when updating the preset: " +
                    treeView_presets.SelectedNode.Text, "Update Preset", MessageBoxButtons.YesNoCancel,
                    MessageBoxIcon.Question);
            string query = QueryGenerator.GenerateQueryForPreset(
                this, QueryPictureSettingsMode.SourceMaximum, true, 0, 0);
            Preset preset = new Preset
                {
                    Name = this.treeView_presets.SelectedNode.Text,
                    Query = query,
                    CropSettings = (result == DialogResult.Yes),
                    AudioPassthruSettings = this.AudioSettings.PassthruSettings,
                    Task = QueryParserUtility.Parse(query),
                };

            presetHandler.Update(preset);
        }

        /// <summary>
        /// Parse a setting and set it in the given preset.
        /// </summary>
        /// <param name="kvp">
        /// The kvp setting pair.
        /// </param>
        /// <param name="preset">
        /// The preset object.
        /// </param>
        private static void ParseSetting(KeyValuePair<string, dynamic> kvp, Preset preset)
        {
            switch (kvp.Key)
            {
                // Output Settings
                case "FileFormat":
                    preset.Task.OutputFormat = Converters.GetFileFormat(kvp.Value.Replace("file", string.Empty).Trim());
                    break;
                case "Mp4HttpOptimize":
                    preset.Task.OptimizeMP4 = kvp.Value == 1;
                    break;
                case "Mp4iPodCompatible":
                    preset.Task.IPod5GSupport = kvp.Value == 1;
                    break;

                // Picture Settings
                case "PictureAutoCrop":
                    preset.Task.HasCropping = kvp.Value != 1;
                    break;
                case "PictureTopCrop":
                    preset.Task.Cropping.Top = kvp.Value;
                    break;
                case "PictureBottomCrop":
                    preset.Task.Cropping.Bottom = kvp.Value;
                    break;
                case "PictureLeftCrop":
                    preset.Task.Cropping.Left = kvp.Value;
                    break;
                case "PictureRightCrop":
                    preset.Task.Cropping.Right = kvp.Value;
                    break;
                case "PictureHeight":
                    preset.Task.Height = kvp.Value == null || kvp.Value == 0 ? null : kvp.Value;
                    break;
                case "PictureWidth":
                    preset.Task.Width = kvp.Value == null || kvp.Value == 0 ? null : kvp.Value;
                    break;
                case "PictureKeepRatio":
                    preset.Task.KeepDisplayAspect = kvp.Value == 1;
                    break;
                case "PicturePAR":
                    preset.Task.Anamorphic = (Anamorphic)kvp.Value;
                    break;
                case "PictureModulus":
                    preset.Task.Modulus = kvp.Value;
                    break;

                // Filters
                case "PictureDeblock":
                    preset.Task.Deblock = kvp.Value;
                    break;
                case "PictureDecomb":
                    preset.Task.Decomb = (Decomb)kvp.Value;
                    break;
                case "PictureDecombCustom":
                    preset.Task.CustomDecomb = kvp.Value;
                    break;
                case "PictureDecombDeinterlace":
                    preset.UseDeinterlace = kvp.Value == 1;
                    break;
                case "PictureDeinterlace":
                    preset.Task.Deinterlace = (Deinterlace)kvp.Value;
                    break;
                case "PictureDeinterlaceCustom":
                    preset.Task.CustomDeinterlace = kvp.Value;
                    break;
                case "PictureDenoise":
                    preset.Task.Denoise = (Denoise)kvp.Value;
                    break;
                case "PictureDenoiseCustom":
                    preset.Task.CustomDenoise = kvp.Value;
                    break;
                case "PictureDetelecine":
                    preset.Task.Detelecine = (Detelecine)kvp.Value;
                    break;
                case "PictureDetelecineCustom":
                    preset.Task.CustomDetelecine = kvp.Value;
                    break;

                // Video Tab
                case "VideoAvgBitrate":
                    if (!string.IsNullOrEmpty(kvp.Value))
                    {
                        preset.Task.VideoBitrate = int.Parse(kvp.Value);
                    }
                    break;
                case "VideoEncoder":
                    preset.Task.VideoEncoder = EnumHelper<VideoEncoder>.GetValue(kvp.Value);
                    break;
                case "VideoFramerate":
                    preset.Task.Framerate = kvp.Value == "Same as source" || string.IsNullOrEmpty(kvp.Value) ? null : double.Parse(kvp.Value, CultureInfo.InvariantCulture);
//.........这里部分代码省略.........

        /// <summary>
        /// Setup this window for a new source
        /// </summary>
        /// <param name="title">
        /// The title.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetSource(Title title, Preset preset, EncodeTask task)
        {
            this.SourceTracks.Clear();
            this.SourceTracks.Add(ForeignAudioSearchTrack);
            foreach (Subtitle subtitle in title.Subtitles)
            {
                this.SourceTracks.Add(subtitle);
            }

            this.Task = task;
            this.NotifyOfPropertyChange(() => this.Task);

            this.AutomaticSubtitleSelection();
        }

        /// <summary>
        /// Setup this tab for the specified preset.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetPreset(Preset preset, EncodeTask task)
        {
            this.Task = task;
            if (preset == null || preset.Task == null)
            {
                return;
            }

            this.SelectedVideoEncoder = preset.Task.VideoEncoder;
            this.SelectedFramerate = preset.Task.Framerate.HasValue ? preset.Task.Framerate.Value.ToString(CultureInfo.InvariantCulture) : SameAsSource;

            this.IsConstantQuantity = preset.Task.VideoEncodeRateType == VideoEncodeRateType.ConstantQuality;

            switch (preset.Task.FramerateMode)
            {
                case FramerateMode.CFR:
                    this.IsConstantFramerate = true;
                    break;
                case FramerateMode.VFR:
                    this.IsVariableFramerate = true;
                    this.ShowPeakFramerate = false;
                    break;
                case FramerateMode.PFR:
                    this.IsPeakFramerate = true;
                    this.ShowPeakFramerate = true;
                    break;
            }

            double cqStep = userSettingService.GetUserSetting<double>(UserSettingConstants.X264Step);
            double rfValue = 0;
            this.SetQualitySliderBounds();
            switch (this.SelectedVideoEncoder)
            {
                case VideoEncoder.FFMpeg:
                case VideoEncoder.FFMpeg2:
                    if (preset.Task.Quality.HasValue)
                    {
                        int cq;
                        int.TryParse(preset.Task.Quality.Value.ToString(CultureInfo.InvariantCulture), out cq);
                        this.RF = 32 - cq;
                    }
                    break;
                case VideoEncoder.X264:

                    double multiplier = 1.0 / cqStep;
                    if (preset.Task.Quality.HasValue)
                    {
                        rfValue = preset.Task.Quality.Value * multiplier;
                    }

                    this.RF = this.QualityMax - (int)Math.Round(rfValue, 0);

                    break;

                case VideoEncoder.Theora:
                    if (preset.Task.Quality.HasValue)
                    {
                        this.RF = (int)preset.Task.Quality.Value;
                    }
                    break;
            }

            this.Task.TwoPass = preset.Task.TwoPass;
            this.Task.TurboFirstPass = preset.Task.TurboFirstPass;
            this.Task.VideoBitrate = preset.Task.VideoBitrate;

            this.NotifyOfPropertyChange(() => this.Task);

            if (preset.Task != null)
            {
                this.SetEncoder(preset.Task.VideoEncoder);
                this.X264PresetValue = preset.Task.VideoEncoder == VideoEncoder.X264
                                           ? (int)preset.Task.X264Preset
                                           : (int)x264Preset.Medium;
                this.H264Profile = preset.Task.VideoEncoder == VideoEncoder.X264 ? preset.Task.H264Profile : x264Profile.None;
                this.X264Tune = preset.Task.VideoEncoder == VideoEncoder.X264 ? preset.Task.X264Tune : x264Tune.None;
                this.H264Level = preset.Task.VideoEncoder == VideoEncoder.X264 ? preset.Task.H264Level : "Auto";
                this.FastDecode = preset.Task.VideoEncoder == VideoEncoder.X264 && preset.Task.FastDecode;
                this.ExtraArguments = preset.Task.ExtraAdvancedArguments;

                this.UseAdvancedTab = !string.IsNullOrEmpty(preset.Task.AdvancedEncoderOptions) && this.ShowAdvancedTab;
            }
        }

        /// <summary>
        /// Set the Source Title
        /// </summary>
        /// <param name="title">
        /// The title.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetSource(Title title, Preset preset, EncodeTask task)
        {
            this.SourceTracks = title.AudioTracks;

            this.SetPreset(preset, task);
            this.AutomaticTrackSelection();
        }

        /// <summary>
        /// Add the encode settings to the preset
        /// </summary>
        /// <param name="xmlWriter">
        /// The xml writer.
        /// </param>
        /// <param name="parsed">
        /// The parsed.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="build">
        /// The build.
        /// </param>
        private static void AddEncodeSettings(XmlTextWriter xmlWriter, EncodeTask parsed, Preset preset, string build)
        {
            AddEncodeElement(xmlWriter, "AudioAllowAACPass", "integer", getNullBoolValue(parsed.AllowedPassthruOptions.AudioAllowAACPass));
            AddEncodeElement(xmlWriter, "AudioAllowAC3Pass", "integer", getNullBoolValue(parsed.AllowedPassthruOptions.AudioAllowAC3Pass));
            AddEncodeElement(xmlWriter, "AudioAllowDTSHDPass", "integer", getNullBoolValue(parsed.AllowedPassthruOptions.AudioAllowDTSHDPass));
            AddEncodeElement(xmlWriter, "AudioAllowDTSPass", "integer", getNullBoolValue(parsed.AllowedPassthruOptions.AudioAllowDTSPass));
            AddEncodeElement(xmlWriter, "AudioAllowMP3Pass", "integer", getNullBoolValue(parsed.AllowedPassthruOptions.AudioAllowMP3Pass));
            AddEncodeElement(xmlWriter, "AudioEncoderFallback", "string", EnumHelper<AudioEncoder>.GetDisplay(parsed.AllowedPassthruOptions.AudioEncoderFallback));

            AddEncodeElement(xmlWriter, "ChapterMarkers", "integer", parsed.IncludeChapterMarkers ? "1" : "0");
            AddEncodeElement(xmlWriter, "Default", "integer", "0");
            AddEncodeElement(xmlWriter, "FileFormat", "string", (parsed.OutputFormat == OutputFormat.Mp4 || parsed.OutputFormat == OutputFormat.M4V) ? "MP4 file" : "MKV file");
            AddBooleanElement(xmlWriter, "Folder", false);
            AddEncodeElement(xmlWriter, "Mp4HttpOptimize", "integer", parsed.OptimizeMP4 ? "1" : "0");
            AddEncodeElement(xmlWriter, "Mp4LargeFile", "integer", parsed.LargeFile ? "1" : "0");
            AddEncodeElement(xmlWriter, "Mp4iPodCompatible", "integer", parsed.IPod5GSupport ? "1" : "0");
            AddEncodeElement(xmlWriter, "PictureAutoCrop", "integer", "1");
            AddEncodeElement(xmlWriter, "PictureBottomCrop", "integer", parsed.Cropping.Bottom.ToString());

            // Filters
            AddEncodeElement(xmlWriter, "PictureDeblock", "integer", parsed.Deblock.ToString());

            switch (parsed.Decomb)
            {
                case Decomb.Off:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                case Decomb.Default:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                case Decomb.Fast:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "3");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                case Decomb.Bob:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "4");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                case Decomb.Custom:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "1");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", parsed.CustomDecomb);
                    break;
            }
            AddEncodeElement(xmlWriter, "PictureDecombDeinterlace", "integer", parsed.Decomb != Decomb.Off ? "0" : "1");

            switch (parsed.Deinterlace)
            {
                case Deinterlace.Off:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Fast:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Slow:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "3");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Slower:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "4");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Bob:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "5");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Custom:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "1");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", parsed.CustomDeinterlace);
                    break;
            }

            switch (parsed.Denoise)
            {
                case Denoise.Off:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
                case Denoise.Weak:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
//.........这里部分代码省略.........

        /// <summary>
        /// Setup this tab for the specified preset.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetPreset(Preset preset, EncodeTask task)
        {
            this.Task = task;
            this.currentPreset = preset;

            if (preset != null && preset.Task != null)
            {
                int mode = this.UserSettingService.GetUserSetting<int>(UserSettingConstants.DubModeAudio);
                if (mode >= 1)
                {
                    this.AutomaticTrackSelection();
                }
                else
                {
                    this.AddTracksFromPreset(preset);
                }

                this.AutomaticTrackSelection();

                this.Task.AllowedPassthruOptions = new AllowedPassthru(preset.Task.AllowedPassthruOptions);
            }
            this.NotifyOfPropertyChange(() => this.Task);
        }

        /// <summary>
        /// Add the encode settings to the preset
        /// </summary>
        /// <param name="xmlWriter">
        /// The xml writer.
        /// </param>
        /// <param name="parsed">
        /// The parsed.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        private static void AddEncodeSettings(XmlTextWriter xmlWriter, EncodeTask parsed, Preset preset)
        {
            AddEncodeElement(xmlWriter, "ChapterMarkers", "integer", parsed.IncludeChapterMarkers ? "1" : "0");
            AddEncodeElement(xmlWriter, "Default", "integer", "0");
            AddEncodeElement(xmlWriter, "FileFormat", "string", Converters.GetFileFormat(parsed.OutputFormat) + " file");
            AddBooleanElement(xmlWriter, "Folder", false);
            AddEncodeElement(xmlWriter, "Mp4HttpOptimize", "integer", parsed.OptimizeMP4 ? "1" : "0");
            AddEncodeElement(xmlWriter, "Mp4LargeFile", "integer", parsed.LargeFile ? "1" : "0");
            AddEncodeElement(xmlWriter, "Mp4iPodCompatible", "integer", parsed.IPod5GSupport ? "1" : "0");
            AddEncodeElement(xmlWriter, "PictureAutoCrop", "integer", "1");
            AddEncodeElement(xmlWriter, "PictureBottomCrop", "integer", parsed.Cropping.Bottom.ToString());

            // Filters
            AddEncodeElement(xmlWriter, "PictureDeblock", "integer", parsed.Deblock.ToString());

            switch (parsed.Decomb)
            {
                case Decomb.Off:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                case Decomb.Default:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "1");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", string.Empty);
                    break;
                default:
                    AddEncodeElement(xmlWriter, "PictureDecomb", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDecombCustom", "string", parsed.CustomDecomb);
                    break;
            }
            AddEncodeElement(xmlWriter, "PictureDecombDeinterlace", "integer", parsed.Decomb != Decomb.Off ? "0" : "1");

            switch (parsed.Deinterlace)
            {
                case Deinterlace.Off:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Fast:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "1");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Slow:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                case Deinterlace.Slower:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "3");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", string.Empty);
                    break;
                default:
                    AddEncodeElement(xmlWriter, "PictureDeinterlace", "integer", "4");
                    AddEncodeElement(xmlWriter, "PictureDeinterlaceCustom", "string", parsed.CustomDeinterlace);
                    break;
            }

            switch (parsed.Denoise)
            {
                case Denoise.Off:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "0");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
                case Denoise.Weak:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "1");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
                case Denoise.Medium:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "2");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
                case Denoise.Strong:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "3");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", string.Empty);
                    break;
                default:
                    AddEncodeElement(xmlWriter, "PictureDenoise", "integer", "4");
                    AddEncodeElement(xmlWriter, "PictureDenoiseCustom", "string", parsed.CustomDenoise);
                    break;
            }

            int detelecine;
            switch (parsed.Detelecine)
            {
                case Detelecine.Off:
                    detelecine = 0;
                    break;
                case Detelecine.Default:
                    detelecine = 2;
//.........这里部分代码省略.........

        /// <summary>
        /// Import a plist preset
        /// </summary>
        private void ImportPreset()
        {
            if (openPreset.ShowDialog() == DialogResult.OK)
            {
                EncodeTask parsed = PlistPresetHandler.Import(openPreset.FileName);

                if (presetHandler.CheckIfPresetExists(parsed.PresetName))
                {
                    if (!presetHandler.CanUpdatePreset(parsed.PresetName))
                    {
                        MessageBox.Show(
                            "You can not import a preset with the same name as a built-in preset.",
                            "Error",
                            MessageBoxButtons.OK,
                            MessageBoxIcon.Error);
                        return;
                    }

                    DialogResult result =
                        MessageBox.Show("This preset appears to already exist. Would you like to overwrite it?",
                                        "Overwrite preset?",
                                        MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
                    if (result == DialogResult.Yes)
                    {
                        Preset preset = new Preset
                        {
                            Name = parsed.PresetName,
                            Query = QueryGeneratorUtility.GenerateQuery(parsed),
                            CropSettings = parsed.UsesPictureSettings,
                            Description = string.Empty,
                            AudioPassthruSettings = parsed.AllowedPassthruOptions
                        };

                        presetHandler.Update(preset);
                    }
                }
                else
                {
                    Preset preset = new Preset
                    {
                        Name = parsed.PresetName,
                        Query = QueryGeneratorUtility.GenerateQuery(parsed),
                        CropSettings = parsed.UsesPictureSettings,
                        Description = string.Empty,
                        AudioPassthruSettings = parsed.AllowedPassthruOptions
                    };

                    if (presetHandler.Add(preset))
                    {
                        TreeNode preset_treeview = new TreeNode(parsed.PresetName)
                                                       {
                                                           ForeColor = Color.Black,
                                                           Tag = preset,
                                                       };
                        treeView_presets.Nodes.Add(preset_treeview);
                    }
                }
            }
        }

        /// <summary>
        /// Add the required tracks for the current preset
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        private void AddTracksFromPreset(Preset preset)
        {
            // Clear out the old tracks
            this.Task.AudioTracks.Clear();

            // Add the preset audio tracks with the preferred language
            foreach (AudioTrack track in preset.Task.AudioTracks)
            {
                this.Task.AudioTracks.Add(new AudioTrack(track) { ScannedTrack = this.GetPreferredAudioTrack() });
            }
        }

        /// <summary>
        /// This function takes in a Query which has been parsed by QueryParser and
        /// set's all the GUI widgets correctly.
        /// </summary>
        /// <param name="mainWindow">
        /// FrmMain window
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        public static void LoadPreset(frmMain mainWindow, Preset preset)
        {
            // Send the query from the file to the Query Parser class
            EncodeTask presetQuery = preset.Task ?? QueryParserUtility.Parse(preset.Query);
            if (preset.Task == null)
            {
                preset.Task = presetQuery;
            }

            #region Source

            // Reset some vaules to stock first to prevent errors.
            mainWindow.check_iPodAtom.CheckState = CheckState.Unchecked;

            // Now load all the new settings onto the main window
            string destination = mainWindow.text_destination.Text;
            destination = destination.Replace(".mp4", "." + presetQuery.OutputFormat);
            destination = destination.Replace(".m4v", "." + presetQuery.OutputFormat);
            destination = destination.Replace(".mkv", "." + presetQuery.OutputFormat);
            mainWindow.text_destination.Text = destination;

            #endregion

            #region Destination and Output Settings

            if (presetQuery.OutputFormat == OutputFormat.Mp4 || presetQuery.OutputFormat == OutputFormat.M4V)
            {
                if (mainWindow.drop_format.SelectedIndex == 0)
                {
                    mainWindow.SetExtension(".mp4");
                }
                else
                {
                    mainWindow.drop_format.SelectedIndex = 0;
                }
            }
            else if (presetQuery.OutputFormat == OutputFormat.Mkv)
            {
                if (mainWindow.drop_format.SelectedIndex == 1)
                {
                    mainWindow.SetExtension(".mkv");
                }
                else
                {
                    mainWindow.drop_format.SelectedIndex = 1;
                }