diff --git a/src/App/Resources/Converter/PreferCodecConverter.cs b/src/App/Resources/Converter/PreferCodecConverter.cs
index c51e7768d..ce9a2b070 100644
--- a/src/App/Resources/Converter/PreferCodecConverter.cs
+++ b/src/App/Resources/Converter/PreferCodecConverter.cs
@@ -28,6 +28,9 @@ public object Convert(object value, Type targetType, object parameter, string la
                     case PreferCodec.H264:
                         result = resourceToolkit.GetLocaleString(LanguageNames.H264);
                         break;
+                    case PreferCodec.Av1:
+                        result = resourceToolkit.GetLocaleString(LanguageNames.Av1);
+                        break;
                     default:
                         break;
                 }
diff --git a/src/App/Resources/Strings/zh-CN/Resources.resw b/src/App/Resources/Strings/zh-CN/Resources.resw
index 9d4e0fdf8..a8baa1129 100644
--- a/src/App/Resources/Strings/zh-CN/Resources.resw
+++ b/src/App/Resources/Strings/zh-CN/Resources.resw
@@ -183,6 +183,9 @@
   <data name="AutoPlayWhenLoaded" xml:space="preserve">
     <value>加载完成后自动播放</value>
   </data>
+  <data name="Av1" xml:space="preserve">
+    <value>AV1</value>
+  </data>
   <data name="AvBvConverter" xml:space="preserve">
     <value>AV/BV 互转</value>
   </data>
@@ -920,7 +923,7 @@ BV号以 BV 开头，是一串英文数字混合的编号， 如 BV1JL4y1875w</v
     <value>解码器偏好</value>
   </data>
   <data name="PreferCodecDescription" xml:space="preserve">
-    <value>优先选择该编码的视频流，HEVC/H.265需要额外安装解码器</value>
+    <value>优先选择该编码的视频流，HEVC/H.265 和 AV1 需要额外安装解码器</value>
   </data>
   <data name="PreferHighQuality" xml:space="preserve">
     <value>画质优先</value>
diff --git a/src/Lib/Lib.Uwp/PlayerProvider/PlayerProvider.Extension.cs b/src/Lib/Lib.Uwp/PlayerProvider/PlayerProvider.Extension.cs
index 5c2f4eb6a..5f2951204 100644
--- a/src/Lib/Lib.Uwp/PlayerProvider/PlayerProvider.Extension.cs
+++ b/src/Lib/Lib.Uwp/PlayerProvider/PlayerProvider.Extension.cs
@@ -38,7 +38,7 @@ private async Task<PlayerInformation> InternalGetDashAsync(string cid, string ai
                 { Query.Fnver, "0" },
                 { Query.Cid, cid.ToString() },
                 { Query.Fourk, "1" },
-                { Query.Fnval, "16" },
+                { Query.Fnval, "4048" },
                 { Query.Qn, "64" },
                 { Query.OType, "json" },
             };
diff --git a/src/Models/Models.Enums/App/LanguageNames.cs b/src/Models/Models.Enums/App/LanguageNames.cs
index 86eef2054..7714e9272 100644
--- a/src/Models/Models.Enums/App/LanguageNames.cs
+++ b/src/Models/Models.Enums/App/LanguageNames.cs
@@ -432,6 +432,7 @@ public enum LanguageNames
         ScreenshotFolder,
         CopyToClipboardAfterScreenshot,
         OpenFileAfterScreenshot,
+        Av1,
 #pragma warning restore SA1602 // Enumeration items should be documented
     }
 }
diff --git a/src/Models/Models.Enums/App/PreferCodec.cs b/src/Models/Models.Enums/App/PreferCodec.cs
index 2019fadd4..a68ef5337 100644
--- a/src/Models/Models.Enums/App/PreferCodec.cs
+++ b/src/Models/Models.Enums/App/PreferCodec.cs
@@ -21,5 +21,10 @@ public enum PreferCodec
         /// FLV.
         /// </summary>
         Flv,
+
+        /// <summary>
+        /// AV1.
+        /// </summary>
+        Av1,
     }
 }
diff --git a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Dash.cs b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Dash.cs
index 971221a70..16013281f 100644
--- a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Dash.cs
+++ b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Dash.cs
@@ -29,7 +29,7 @@ private async Task InitializeOnlineDashVideoAsync()
                 httpClient.DefaultRequestHeaders.Add("User-Agent", ServiceConstants.DefaultUserAgentString);
                 var mpdStr = await _fileToolkit.ReadPackageFile(AppConstants.DashVideoMPDFile);
 
-                var videos = _videoList.Where(p => p.CodecId == GetPreferCodecId()).ToList();
+                var videos = _videoList.Where(p => p.Codecs.Contains(GetPreferCodecId())).ToList();
                 if (videos.Count == 0)
                 {
                     videos = _videoList;
diff --git a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Methods.cs b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Methods.cs
index ca01284a8..9fd18a79e 100644
--- a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Methods.cs
+++ b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.Methods.cs
@@ -592,13 +592,16 @@ private void InitializeTimer()
             }
         }
 
-        private int GetPreferCodecId()
+        private string GetPreferCodecId()
         {
-            var id = 7;
+            var id = "avc";
             switch (PreferCodec)
             {
                 case PreferCodec.H265:
-                    id = 12;
+                    id = "hev";
+                    break;
+                case PreferCodec.Av1:
+                    id = "av01";
                     break;
                 default:
                     break;
diff --git a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.cs b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.cs
index ed15abb10..899d2d678 100644
--- a/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.cs
+++ b/src/ViewModels/ViewModels.Uwp/Common/PlayerViewModel/PlayerViewModel.cs
@@ -434,7 +434,7 @@ public async Task ChangeFormatAsync(int formatId)
                 }
                 else
                 {
-                    var tempVideo = conditionStreams.Where(p => p.CodecId == preferCodecId).FirstOrDefault();
+                    var tempVideo = conditionStreams.Where(p => p.Codecs.Contains(preferCodecId)).FirstOrDefault(p => p.Id == formatId);
                     if (tempVideo == null)
                     {
                         tempVideo = conditionStreams.First();
diff --git a/src/ViewModels/ViewModels.Uwp/Common/SettingViewModel/SettingViewModel.cs b/src/ViewModels/ViewModels.Uwp/Common/SettingViewModel/SettingViewModel.cs
index c366c4715..be9b77202 100644
--- a/src/ViewModels/ViewModels.Uwp/Common/SettingViewModel/SettingViewModel.cs
+++ b/src/ViewModels/ViewModels.Uwp/Common/SettingViewModel/SettingViewModel.cs
@@ -154,6 +154,7 @@ private void PreferCodecInit()
                 {
                     PreferCodec.H264,
                     PreferCodec.H265,
+                    PreferCodec.Av1,
                 };
             }