diff --git a/Core/RenderManager.cs b/Core/RenderManager.cs
index 4c6c031..f9f8576 100644
--- a/Core/RenderManager.cs
+++ b/Core/RenderManager.cs
@@ -502,10 +502,12 @@ namespace ADOFAIRenderer.Core
             var videoFPS = Configuration.VideoFPS;
 
             var startTime = DateTime.Now;
-            var fileName = startTime.ToString("yyyy-MM-dd HH-mm-ss") + $".{Configuration.AdvancedConfig.Extension}";
-            _currentOutPath = Path.Combine(MelonEnvironment.GameRootDirectory, "Render", fileName);
-
             if (RenderContext.OutputPath != null) _currentOutPath = RenderContext.OutputPath;
+            else {
+                var fileName = startTime.ToString("yyyy-MM-dd HH-mm-ss") +
+                           $".{Configuration.AdvancedConfig.FileExtension}";
+                _currentOutPath = Path.Combine(MelonEnvironment.GameRootDirectory, "Render", fileName);
+            }
 
             FFmpegNativeEncoder? videoFFmpeg = null;
             try
diff --git a/Data/RenderConfig.cs b/Data/RenderConfig.cs
index bae11c9..33235c1 100644
--- a/Data/RenderConfig.cs
+++ b/Data/RenderConfig.cs
@@ -26,7 +26,7 @@ namespace ADOFAIRenderer.Data
         public int? RandomSeed { get; set; } = null;
         public bool ProcessAudio { get; set; } = true;
         public bool NonTile { get; set; } = false;
-        public string Extension { get; set; } = "mkv";
+        public string FileExtension { get; set; } = "mkv";
     }
 
     public class VideoEncodingConfig
diff --git a/UI/RenderConfigUIManager.cs b/UI/RenderConfigUIManager.cs
index bd66328..099501e 100644
--- a/UI/RenderConfigUIManager.cs
+++ b/UI/RenderConfigUIManager.cs
@@ -124,7 +124,7 @@ namespace ADOFAIRenderer.UI
                 ProcessAudio = config.AdvancedConfig.ProcessAudio,
                 RandomSeed = config.AdvancedConfig.RandomSeed,
                 NonTile = config.AdvancedConfig.NonTile,
-                Extension = config.AdvancedConfig.Extension
+                FileExtension = config.AdvancedConfig.FileExtension
             };
 
             if (_advancedConfigContainer != null && _root.Contains(_advancedConfigContainer))
@@ -162,18 +162,18 @@ namespace ADOFAIRenderer.UI
             _advancedConfigContainer.Add(titleRow);
 
             // 2. 확장자 로우
-            var extensionRow = CreateRow();
-            var extensionLabel = CreateFormLabel("확장자");
-            var extensionChoices = new List<string> { "mkv", "mp4", "mov", "webm", "avi" };
-            var currentExt = string.IsNullOrWhiteSpace(tempConfig.Extension) ? "mkv" : tempConfig.Extension.TrimStart('.').ToLower();
-            if (!extensionChoices.Contains(currentExt))
+            var fileExtensionRow = CreateRow();
+            var fileExtensionLabel = CreateFormLabel("확장자");
+            var fileExtensionChoices = new List<string> { "mkv", "mp4", "mov", "webm", "avi" };
+            var currentFileExt = string.IsNullOrWhiteSpace(tempConfig.FileExtension) ? "mkv" : tempConfig.FileExtension.TrimStart('.').ToLower();
+            if (!fileExtensionChoices.Contains(currentFileExt))
             {
-                extensionChoices.Add(currentExt);
+                fileExtensionChoices.Add(currentFileExt);
             }
-            var extensionDropdown = new DropdownField(extensionChoices, currentExt) { name = "AdvancedExtension" };
-            extensionRow.Add(extensionLabel);
-            extensionRow.Add(extensionDropdown);
-            _advancedConfigContainer.Add(extensionRow);
+            var fileExtensionDropdown = new DropdownField(fileExtensionChoices, currentFileExt) { name = "AdvancedFileExtension" };
+            fileExtensionRow.Add(fileExtensionLabel);
+            fileExtensionRow.Add(fileExtensionDropdown);
+            _advancedConfigContainer.Add(fileExtensionRow);
 
             // 3. 오디오 처리 로우
             var processAudioRow = CreateRow();
@@ -227,7 +227,7 @@ namespace ADOFAIRenderer.UI
 
             saveBtn.RegisterCallback<ClickEvent>(_ =>
             {
-                tempConfig.Extension = extensionDropdown.value;
+                tempConfig.FileExtension = fileExtensionDropdown.value;
                 tempConfig.ProcessAudio = processAudioToggle.value;
                 tempConfig.NonTile = nonTileToggle.value;
                 if (int.TryParse(randomSeedField.value?.Trim(), out var seed))