diff --git a/src/DownKyi.Core/BiliApi/BiliUtils/Constant.cs b/src/DownKyi.Core/BiliApi/BiliUtils/Constant.cs
index 23dba62b..c8a3fa2c 100644
--- a/src/DownKyi.Core/BiliApi/BiliUtils/Constant.cs
+++ b/src/DownKyi.Core/BiliApi/BiliUtils/Constant.cs
@@ -19,12 +19,20 @@ public static class Constant
             new Quality { Name = "360P 流畅", Id = 16 },
         };
 
+        private static readonly List<Quality> codecIds = new List<Quality>
+        {
+            new Quality { Name = "H.264/AVC", Id = 7 },
+            new Quality { Name = "H.265/HEVC", Id = 12 },
+            new Quality { Name = "AV1", Id = 13 },
+        };
+
         private static readonly List<Quality> qualities = new List<Quality>
         {
             new Quality { Name = "64K", Id = 30216 },
             new Quality { Name = "132K", Id = 30232 },
             new Quality { Name = "192K", Id = 30280 },
             new Quality { Name = "Dolby Atmos", Id = 30250 },
+            new Quality { Name = "Hi-Res无损", Id = 30251 },
         };
 
         /// <summary>
@@ -39,6 +47,18 @@ public static List<Quality> GetResolutions()
             return new List<Quality>(resolutions);
         }
 
+        /// <summary>
+        /// 获取视频编码代码
+        /// </summary>
+        /// <returns></returns>
+        public static List<Quality> GetCodecIds()
+        {
+            // 使用深复制，
+            // 保证外部修改list后，
+            // 不会影响其他调用处
+            return new List<Quality>(codecIds);
+        }
+
         /// <summary>
         /// 获取支持的视频音质
         /// </summary>
diff --git a/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDash.cs b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDash.cs
index ff545d1a..e81a9ffc 100644
--- a/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDash.cs
+++ b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDash.cs
@@ -18,5 +18,7 @@ public class PlayUrlDash : BaseModel
         public List<PlayUrlDashVideo> Audio { get; set; }
         [JsonProperty("dolby")]
         public PlayUrlDashDolby Dolby { get; set; }
+        [JsonProperty("flac")]
+        public PlayUrlDashFlac Flac { get; set; }
     }
 }
diff --git a/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashFlac.cs b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashFlac.cs
new file mode 100644
index 00000000..4c54786d
--- /dev/null
+++ b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashFlac.cs
@@ -0,0 +1,12 @@
+using DownKyi.Core.BiliApi.Models;
+using Newtonsoft.Json;
+
+namespace DownKyi.Core.BiliApi.VideoStream.Models
+{
+    public class PlayUrlDashFlac : BaseModel
+    {
+        [JsonProperty("audio")]
+        public PlayUrlDashVideo Audio { get; set; }
+        //bool display { get; set; }
+    }
+}
diff --git a/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashVideo.cs b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashVideo.cs
index 098f9bca..fab80440 100644
--- a/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashVideo.cs
+++ b/src/DownKyi.Core/BiliApi/VideoStream/Models/PlayUrlDashVideo.cs
@@ -30,6 +30,7 @@ public class PlayUrlDashVideo : BaseModel
         // start_with_sap
         // SegmentBase
         // segment_base
-        // codecid
+        [JsonProperty("codecid")]
+        public int CodecId { get; set; }
     }
 }
diff --git a/src/DownKyi.Core/DownKyi.Core.csproj b/src/DownKyi.Core/DownKyi.Core.csproj
index ba9c2767..0c61a495 100644
--- a/src/DownKyi.Core/DownKyi.Core.csproj
+++ b/src/DownKyi.Core/DownKyi.Core.csproj
@@ -249,6 +249,7 @@
     <Compile Include="BiliApi\VideoStream\Models\PlayUrl.cs" />
     <Compile Include="BiliApi\VideoStream\Models\PlayUrlDash.cs" />
     <Compile Include="BiliApi\VideoStream\Models\PlayUrlDashDolby.cs" />
+    <Compile Include="BiliApi\VideoStream\Models\PlayUrlDashFlac.cs" />
     <Compile Include="BiliApi\VideoStream\Models\PlayUrlDashVideo.cs" />
     <Compile Include="BiliApi\VideoStream\Models\PlayUrlDurl.cs" />
     <Compile Include="BiliApi\VideoStream\Models\PlayUrlSupportFormat.cs" />
diff --git a/src/DownKyi.Core/FFmpeg/FFmpegHelper.cs b/src/DownKyi.Core/FFmpeg/FFmpegHelper.cs
index 1eb34fba..32d23955 100644
--- a/src/DownKyi.Core/FFmpeg/FFmpegHelper.cs
+++ b/src/DownKyi.Core/FFmpeg/FFmpegHelper.cs
@@ -34,15 +34,19 @@ static FFmpegHelper()
         /// <param name="destVideo"></param>
         public static bool MergeVideo(string video1, string video2, string destVideo)
         {
-            string param = $"-y -i \"{video1}\" -i \"{video2}\" -acodec copy -vcodec copy -f mp4 \"{destVideo}\"";
+            string param = $"-y -i \"{video1}\" -i \"{video2}\" -strict -2 -acodec copy -vcodec copy -f mp4 \"{destVideo}\"";
             if (video1 == null || !File.Exists(video1))
             {
-                param = $"-y -i \"{video2}\" -acodec copy -vcodec copy -f mp4 \"{destVideo}\"";
+                param = $"-y -i \"{video2}\" -strict -2 -acodec copy -vcodec copy -f mp4 \"{destVideo}\"";
             }
             if (video2 == null || !File.Exists(video2))
             {
-                param = $"-y -i \"{video1}\" -acodec copy \"{destVideo}\"";
+                param = $"-y -i \"{video1}\" -strict -2 -acodec copy \"{destVideo}\"";
             }
+
+            // 支持flac格式音频
+            //param += " -strict -2";
+
             if (!File.Exists(video1) && !File.Exists(video2)) { return false; }
 
             // 如果存在
diff --git a/src/DownKyi.Core/Settings/Models/VideoSettings.cs b/src/DownKyi.Core/Settings/Models/VideoSettings.cs
index 0cf431ef..0eeec390 100644
--- a/src/DownKyi.Core/Settings/Models/VideoSettings.cs
+++ b/src/DownKyi.Core/Settings/Models/VideoSettings.cs
@@ -8,7 +8,7 @@ namespace DownKyi.Core.Settings.Models
     /// </summary>
     public class VideoSettings
     {
-        public VideoCodecs VideoCodecs { get; set; } = VideoCodecs.NONE; // AVC or HEVC
+        public int VideoCodecs { get; set; } = -1; // AVC or HEVC
         public int Quality { get; set; } = -1; // 画质
         public int AudioQuality { get; set; } = -1; // 音质
         public AllowStatus IsTranscodingFlvToMp4 { get; set; } = AllowStatus.NONE; // 是否将flv转为mp4
diff --git a/src/DownKyi.Core/Settings/SettingsManager.Video.cs b/src/DownKyi.Core/Settings/SettingsManager.Video.cs
index 7a88cc40..c8133f85 100644
--- a/src/DownKyi.Core/Settings/SettingsManager.Video.cs
+++ b/src/DownKyi.Core/Settings/SettingsManager.Video.cs
@@ -9,7 +9,7 @@ namespace DownKyi.Core.Settings
     public partial class SettingsManager
     {
         // 设置优先下载的视频编码
-        private readonly VideoCodecs videoCodecs = VideoCodecs.AVC;
+        private readonly int videoCodecs = 7;
 
         // 设置优先下载画质
         private readonly int quality = 120;
@@ -58,10 +58,10 @@ public partial class SettingsManager
         /// 获取优先下载的视频编码
         /// </summary>
         /// <returns></returns>
-        public VideoCodecs GetVideoCodecs()
+        public int GetVideoCodecs()
         {
             appSettings = GetSettings();
-            if (appSettings.Video.VideoCodecs == VideoCodecs.NONE)
+            if (appSettings.Video.VideoCodecs == -1)
             {
                 // 第一次获取，先设置默认值
                 SetVideoCodecs(videoCodecs);
@@ -75,7 +75,7 @@ public VideoCodecs GetVideoCodecs()
         /// </summary>
         /// <param name="videoCodecs"></param>
         /// <returns></returns>
-        public bool SetVideoCodecs(VideoCodecs videoCodecs)
+        public bool SetVideoCodecs(int videoCodecs)
         {
             appSettings.Video.VideoCodecs = videoCodecs;
             return SetSettings();
diff --git a/src/DownKyi/Services/Download/DownloadService.cs b/src/DownKyi/Services/Download/DownloadService.cs
index 2af551bb..49a7c604 100644
--- a/src/DownKyi/Services/Download/DownloadService.cs
+++ b/src/DownKyi/Services/Download/DownloadService.cs
@@ -1,4 +1,5 @@
-using DownKyi.Core.BiliApi.VideoStream;
+using DownKyi.Core.BiliApi.BiliUtils;
+using DownKyi.Core.BiliApi.VideoStream;
 using DownKyi.Core.BiliApi.VideoStream.Models;
 using DownKyi.Core.Danmaku2Ass;
 using DownKyi.Core.FFmpeg;
@@ -14,6 +15,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.IO;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -82,6 +84,11 @@ protected PlayUrlDashVideo BaseDownloadAudio(DownloadingItem downloading)
                 {
                     downloadAudio = downloading.PlayUrl.Dash.Dolby.Audio[0];
                 }
+                // Hi-Res无损
+                if (downloading.AudioCodec.Id == 30251)
+                {
+                    downloadAudio = downloading.PlayUrl.Dash.Flac.Audio;
+                }
             }
             catch (Exception) { }
 
@@ -110,7 +117,8 @@ protected PlayUrlDashVideo BaseDownloadVideo(DownloadingItem downloading)
             PlayUrlDashVideo downloadVideo = null;
             foreach (PlayUrlDashVideo video in downloading.PlayUrl.Dash.Video)
             {
-                if (video.Id == downloading.Resolution.Id && Utils.GetVideoCodecName(video.Codecs) == downloading.VideoCodecName)
+                Quality codecs = Constant.GetCodecIds().FirstOrDefault(t => t.Id == video.CodecId);
+                if (video.Id == downloading.Resolution.Id && codecs.Name == downloading.VideoCodecName)
                 {
                     downloadVideo = video;
                     break;
diff --git a/src/DownKyi/Services/Utils.cs b/src/DownKyi/Services/Utils.cs
index 6161ba65..b3e055ad 100644
--- a/src/DownKyi/Services/Utils.cs
+++ b/src/DownKyi/Services/Utils.cs
@@ -30,7 +30,7 @@ internal static void VideoPageInfo(PlayUrl playUrl, VideoPage page)
             // 获取设置
             UserInfoSettings userInfo = SettingsManager.GetInstance().GetUserInfo();
             int defaultQuality = SettingsManager.GetInstance().GetQuality();
-            VideoCodecs videoCodecs = SettingsManager.GetInstance().GetVideoCodecs();
+            int videoCodecs = SettingsManager.GetInstance().GetVideoCodecs();
             int defaultAudioQuality = SettingsManager.GetInstance().GetAudioQuality();
 
             // 未登录时，最高仅720P
@@ -132,15 +132,16 @@ private static ObservableCollection<string> GetAudioQualityFormatList_old(PlayUr
         private static ObservableCollection<string> GetAudioQualityFormatList(PlayUrl playUrl, int defaultAudioQuality)
         {
             List<string> audioQualityFormatList = new List<string>();
+            List<Quality> audioQualities = Constant.GetAudioQualities();
 
             if (playUrl.Dash.Audio != null && playUrl.Dash.Audio.Count > 0)
             {
                 foreach (PlayUrlDashVideo audio in playUrl.Dash.Audio)
                 {
-                    // 音质id大于设置画质时，跳过
+                    // 音质id大于设置音质时，跳过
                     if (audio.Id > defaultAudioQuality) { continue; }
 
-                    Quality audioQuality = Constant.GetAudioQualities().FirstOrDefault(t => { return t.Id == audio.Id; });
+                    Quality audioQuality = audioQualities.FirstOrDefault(t => { return t.Id == audio.Id; });
                     if (audioQuality != null)
                     {
                         ListHelper.AddUnique(audioQualityFormatList, audioQuality.Name);
@@ -148,9 +149,20 @@ private static ObservableCollection<string> GetAudioQualityFormatList(PlayUrl pl
                 }
             }
 
-            if (playUrl.Dash.Dolby.Audio != null && playUrl.Dash.Dolby.Audio.Count > 0)
+            if (audioQualities[3].Id <= defaultAudioQuality - 1000 && playUrl.Dash.Dolby != null)
             {
-                ListHelper.AddUnique(audioQualityFormatList, Constant.GetAudioQualities().Last().Name);
+                if (playUrl.Dash.Dolby.Audio != null && playUrl.Dash.Dolby.Audio.Count > 0)
+                {
+                    ListHelper.AddUnique(audioQualityFormatList, audioQualities[3].Name);
+                }
+            }
+
+            if (audioQualities[4].Id <= defaultAudioQuality - 1000 && playUrl.Dash.Flac != null)
+            {
+                if (playUrl.Dash.Flac.Audio != null)
+                {
+                    ListHelper.AddUnique(audioQualityFormatList, audioQualities[4].Name);
+                }
             }
 
             audioQualityFormatList.Sort(new StringLogicalComparer<string>());
@@ -167,9 +179,10 @@ private static ObservableCollection<string> GetAudioQualityFormatList(PlayUrl pl
         /// <param name="userInfo"></param>
         /// <param name="videoCodecs"></param>
         /// <returns></returns>
-        private static List<VideoQuality> GetVideoQualityList(PlayUrl playUrl, UserInfoSettings userInfo, int defaultQuality, VideoCodecs videoCodecs)
+        private static List<VideoQuality> GetVideoQualityList(PlayUrl playUrl, UserInfoSettings userInfo, int defaultQuality, int videoCodecs)
         {
             List<VideoQuality> videoQualityList = new List<VideoQuality>();
+            List<Quality> codeIds = Constant.GetCodecIds();
 
             if (playUrl.Dash.Video == null)
             {
@@ -197,7 +210,8 @@ private static List<VideoQuality> GetVideoQualityList(PlayUrl playUrl, UserInfoS
 
                 // 寻找是否已存在这个画质
                 // 不存在则添加，存在则修改
-                string codecName = GetVideoCodecName(video.Codecs);
+                //string codecName = GetVideoCodecName(video.Codecs);
+                string codecName = codeIds.FirstOrDefault(t => t.Id == video.CodecId).Name;
                 VideoQuality videoQualityExist = videoQualityList.FirstOrDefault(t => t.Quality == video.Id);
                 if (videoQualityExist == null)
                 {
@@ -237,24 +251,29 @@ private static List<VideoQuality> GetVideoQualityList(PlayUrl playUrl, UserInfoS
                 }
 
                 // 设置选中的视频编码
-                switch (videoCodecs)
+                //switch (videoCodecs)
+                //{
+                //    case VideoCodecs.AVC:
+                //        if (videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].VideoCodecList.Contains("H.264/AVC"))
+                //        {
+                //            videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].SelectedVideoCodec = "H.264/AVC";
+                //        }
+                //        break;
+                //    case VideoCodecs.HEVC:
+                //        if (videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].VideoCodecList.Contains("H.265/HEVC"))
+                //        {
+                //            videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].SelectedVideoCodec = "H.265/HEVC";
+                //        }
+                //        break;
+                //    case VideoCodecs.NONE:
+                //        break;
+                //    default:
+                //        break;
+                //}
+                string videoCodecsName = codeIds.FirstOrDefault(t => t.Id == videoCodecs).Name;
+                if (videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].VideoCodecList.Contains(videoCodecsName))
                 {
-                    case VideoCodecs.AVC:
-                        if (videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].VideoCodecList.Contains("H.264/AVC"))
-                        {
-                            videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].SelectedVideoCodec = "H.264/AVC";
-                        }
-                        break;
-                    case VideoCodecs.HEVC:
-                        if (videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].VideoCodecList.Contains("H.265/HEVC"))
-                        {
-                            videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].SelectedVideoCodec = "H.265/HEVC";
-                        }
-                        break;
-                    case VideoCodecs.NONE:
-                        break;
-                    default:
-                        break;
+                    videoQualityList[videoQualityList.IndexOf(selectedVideoQuality)].SelectedVideoCodec = videoCodecsName;
                 }
 
             }
@@ -267,10 +286,10 @@ private static List<VideoQuality> GetVideoQualityList(PlayUrl playUrl, UserInfoS
         /// </summary>
         /// <param name="origin"></param>
         /// <returns></returns>
-        internal static string GetVideoCodecName(string origin)
-        {
-            return origin.Contains("avc") ? "H.264/AVC" : origin.Contains("hev") ? "H.265/HEVC" : origin.Contains("dvh") || origin.Contains("hvc") ? "Dolby Vision" : "";
-        }
+        //internal static string GetVideoCodecName(string origin)
+        //{
+        //    return origin.Contains("avc") ? "H.264/AVC" : origin.Contains("hev") ? "H.265/HEVC" : origin.Contains("dvh") || origin.Contains("hvc") ? "Dolby Vision" : "";
+        //}
 
     }
 }
diff --git a/src/DownKyi/ViewModels/Settings/ViewVideoViewModel.cs b/src/DownKyi/ViewModels/Settings/ViewVideoViewModel.cs
index a7ffd52b..3007a94c 100644
--- a/src/DownKyi/ViewModels/Settings/ViewVideoViewModel.cs
+++ b/src/DownKyi/ViewModels/Settings/ViewVideoViewModel.cs
@@ -24,15 +24,15 @@ public class ViewVideoViewModel : BaseViewModel
 
         #region 页面属性申明
 
-        private List<string> videoCodecs;
-        public List<string> VideoCodecs
+        private List<Quality> videoCodecs;
+        public List<Quality> VideoCodecs
         {
             get => videoCodecs;
             set => SetProperty(ref videoCodecs, value);
         }
 
-        private string selectedVideoCodec;
-        public string SelectedVideoCodec
+        private Quality selectedVideoCodec;
+        public Quality SelectedVideoCodec
         {
             get => selectedVideoCodec;
             set => SetProperty(ref selectedVideoCodec, value);
@@ -186,18 +186,21 @@ public ViewVideoViewModel(IEventAggregator eventAggregator) : base(eventAggregat
             #region 属性初始化
 
             // 优先下载的视频编码
-            VideoCodecs = new List<string>
-            {
-                "H.264/AVC",
-                "H.265/HEVC",
-            };
+            VideoCodecs = Constant.GetCodecIds();
+            //VideoCodecs = new List<string>
+            //{
+            //    "H.264/AVC",
+            //    "H.265/HEVC",
+            //};
 
             // 优先下载画质
             VideoQualityList = Constant.GetResolutions();
 
             // 优先下载音质
             AudioQualityList = Constant.GetAudioQualities();
-            AudioQualityList.RemoveAt(3);
+            //AudioQualityList.RemoveAt(3);
+            AudioQualityList[3].Id = AudioQualityList[3].Id + 1000;
+            AudioQualityList[4].Id = AudioQualityList[4].Id + 1000;
 
             // 文件命名格式
             SelectedFileName = new ObservableCollection<DisplayFileNamePart>();
@@ -253,8 +256,9 @@ public override void OnNavigatedTo(NavigationContext navigationContext)
             isOnNavigatedTo = true;
 
             // 优先下载的视频编码
-            VideoCodecs videoCodecs = SettingsManager.GetInstance().GetVideoCodecs();
-            SelectedVideoCodec = GetVideoCodecsString(videoCodecs);
+            int videoCodecs = SettingsManager.GetInstance().GetVideoCodecs();
+            //SelectedVideoCodec = GetVideoCodecsString(videoCodecs);
+            SelectedVideoCodec = VideoCodecs.FirstOrDefault(t => { return t.Id == videoCodecs; });
 
             // 优先下载画质
             int quality = SettingsManager.GetInstance().GetQuality();
@@ -315,18 +319,20 @@ public override void OnNavigatedTo(NavigationContext navigationContext)
         #region 命令申明
 
         // 优先下载的视频编码事件
-        private DelegateCommand<string> videoCodecsCommand;
-        public DelegateCommand<string> VideoCodecsCommand => videoCodecsCommand ?? (videoCodecsCommand = new DelegateCommand<string>(ExecuteVideoCodecsCommand));
+        private DelegateCommand<object> videoCodecsCommand;
+        public DelegateCommand<object> VideoCodecsCommand => videoCodecsCommand ?? (videoCodecsCommand = new DelegateCommand<object>(ExecuteVideoCodecsCommand));
 
         /// <summary>
         /// 优先下载的视频编码事件
         /// </summary>
         /// <param name="parameter"></param>
-        private void ExecuteVideoCodecsCommand(string parameter)
+        private void ExecuteVideoCodecsCommand(object parameter)
         {
-            VideoCodecs videoCodecs = GetVideoCodecs(parameter);
+            //VideoCodecs videoCodecs = GetVideoCodecs(parameter);
 
-            bool isSucceed = SettingsManager.GetInstance().SetVideoCodecs(videoCodecs);
+            if (!(parameter is Quality videoCodecs)) { return; }
+
+            bool isSucceed = SettingsManager.GetInstance().SetVideoCodecs(videoCodecs.Id);
             PublishTip(isSucceed);
         }
 
@@ -674,49 +680,49 @@ private void ExecuteOrderFormatCommandCommand(object parameter)
         /// </summary>
         /// <param name="videoCodecs"></param>
         /// <returns></returns>
-        private string GetVideoCodecsString(VideoCodecs videoCodecs)
-        {
-            string codec;
-            switch (videoCodecs)
-            {
-                case Core.Settings.VideoCodecs.NONE:
-                    codec = "";
-                    break;
-                case Core.Settings.VideoCodecs.AVC:
-                    codec = "H.264/AVC";
-                    break;
-                case Core.Settings.VideoCodecs.HEVC:
-                    codec = "H.265/HEVC";
-                    break;
-                default:
-                    codec = "";
-                    break;
-            }
-            return codec;
-        }
+        //private string GetVideoCodecsString(VideoCodecs videoCodecs)
+        //{
+        //    string codec;
+        //    switch (videoCodecs)
+        //    {
+        //        case Core.Settings.VideoCodecs.NONE:
+        //            codec = "";
+        //            break;
+        //        case Core.Settings.VideoCodecs.AVC:
+        //            codec = "H.264/AVC";
+        //            break;
+        //        case Core.Settings.VideoCodecs.HEVC:
+        //            codec = "H.265/HEVC";
+        //            break;
+        //        default:
+        //            codec = "";
+        //            break;
+        //    }
+        //    return codec;
+        //}
 
         /// <summary>
         /// 返回VideoCodecs
         /// </summary>
         /// <param name="str"></param>
         /// <returns></returns>
-        private VideoCodecs GetVideoCodecs(string str)
-        {
-            VideoCodecs videoCodecs;
-            switch (str)
-            {
-                case "H.264/AVC":
-                    videoCodecs = Core.Settings.VideoCodecs.AVC;
-                    break;
-                case "H.265/HEVC":
-                    videoCodecs = Core.Settings.VideoCodecs.HEVC;
-                    break;
-                default:
-                    videoCodecs = Core.Settings.VideoCodecs.NONE;
-                    break;
-            }
-            return videoCodecs;
-        }
+        //private VideoCodecs GetVideoCodecs(string str)
+        //{
+        //    VideoCodecs videoCodecs;
+        //    switch (str)
+        //    {
+        //        case "H.264/AVC":
+        //            videoCodecs = Core.Settings.VideoCodecs.AVC;
+        //            break;
+        //        case "H.265/HEVC":
+        //            videoCodecs = Core.Settings.VideoCodecs.HEVC;
+        //            break;
+        //        default:
+        //            videoCodecs = Core.Settings.VideoCodecs.NONE;
+        //            break;
+        //    }
+        //    return videoCodecs;
+        //}
 
         /// <summary>
         /// 保存下载视频内容到设置
diff --git a/src/DownKyi/Views/Settings/ViewVideo.xaml b/src/DownKyi/Views/Settings/ViewVideo.xaml
index 4511b48f..10eca519 100644
--- a/src/DownKyi/Views/Settings/ViewVideo.xaml
+++ b/src/DownKyi/Views/Settings/ViewVideo.xaml
@@ -23,6 +23,7 @@
                     Name="nameVideoCodecs"
                     Width="120"
                     VerticalContentAlignment="Center"
+                    DisplayMemberPath="Name"
                     ItemsSource="{Binding VideoCodecs}"
                     SelectedValue="{Binding SelectedVideoCodec}">
                     <i:Interaction.Triggers>
diff --git a/src/DownKyi/Views/Toolbox/ViewExtractMedia.xaml b/src/DownKyi/Views/Toolbox/ViewExtractMedia.xaml
index 13675c63..b3d01b2f 100644
--- a/src/DownKyi/Views/Toolbox/ViewExtractMedia.xaml
+++ b/src/DownKyi/Views/Toolbox/ViewExtractMedia.xaml
@@ -27,10 +27,10 @@
                     Orientation="Horizontal">
                     <TextBlock VerticalAlignment="Center" Text="{DynamicResource VideoFilePath}" />
                     <TextBox
-                        Width="300"
-                        Height="50"
+                        Width="600"
+                        Height="65"
                         Margin="0,10,10,10"
-                        VerticalContentAlignment="Center"
+                        VerticalContentAlignment="Top"
                         IsReadOnly="True"
                         Text="{Binding VideoPathsStr, Mode=TwoWay}" />