diff --git a/server/src/Controllers/VideoStreamController.cs b/server/src/Controllers/VideoStreamController.cs
index fca04e3..63fa381 100644
--- a/server/src/Controllers/VideoStreamController.cs
+++ b/server/src/Controllers/VideoStreamController.cs
@@ -68,40 +68,6 @@ public class VideoStreamController : ControllerBase
         return boardId.ToString();
     }
 
-    private Optional<string> TryGetBoardId()
-    {
-        var userName = User.FindFirstValue(ClaimTypes.Name);
-        if (string.IsNullOrEmpty(userName))
-        {
-            logger.Error("User name not found in claims.");
-            return Optional<string>.None;
-        }
-
-        var db = new AppDataConnection();
-        if (db == null)
-        {
-            logger.Error("Database connection failed.");
-            return Optional<string>.None;
-        }
-
-        var userRet = db.GetUserByName(userName);
-        if (!userRet.IsSuccessful || !userRet.Value.HasValue)
-        {
-            logger.Error("User not found.");
-            return Optional<string>.None;
-        }
-
-        var user = userRet.Value.Value;
-        var boardId = user.BoardID;
-        if (boardId == Guid.Empty)
-        {
-            logger.Error("No board bound to this user.");
-            return Optional<string>.None;
-        }
-
-        return boardId.ToString();
-    }
-
     /// <summary>
     /// 获取 HTTP 视频流服务状态
     /// </summary>
@@ -414,12 +380,4 @@ public class VideoStreamController : ControllerBase
         [Range(480, 1080, ErrorMessage = "高度必须在480-1080范围内")]
         public int Height { get; set; }
     }
-
-    public class AvailableResolutionsResponse
-    {
-        public int Width { get; set; }
-        public int Height { get; set; }
-        public string Name { get; set; } = string.Empty;
-        public string Value => $"{Width}x{Height}";
-    }
 }