diff --git a/lib/ffmpeg_queue_v1.py b/lib/ffmpeg_queue_v1.py
index 83a8d1f..955834d 100644
--- a/lib/ffmpeg_queue_v1.py
+++ b/lib/ffmpeg_queue_v1.py
@@ -632,10 +632,18 @@ class FfmpegQueue(object):
                         ret["ret"] = "notify"
                         ret["log"] = "다운로드중 상태가 아닙니다."
                     else:
-                        idx = entity.ffmpeg_arg["data"]["idx"]
-                        import ffmpeg
-
-                        ffmpeg.Ffmpeg.stop_by_idx(idx)
+                        # ffmpeg_arg가 있는 경우에만 ffmpeg 모듈로 중지
+                        if entity.ffmpeg_arg is not None and entity.ffmpeg_arg.get("data") is not None:
+                            try:
+                                idx = entity.ffmpeg_arg["data"].get("idx")
+                                if idx is not None:
+                                    import ffmpeg
+                                    ffmpeg.Ffmpeg.stop_by_idx(idx)
+                            except Exception as e:
+                                logger.debug(f"ffmpeg stop error (non-critical): {e}")
+                        # 커스텀 다운로더의 경우 cancel 플래그만 설정
+                        entity.cancel = True
+                        entity.ffmpeg_status_kor = "취소"
                         entity.refresh_status()
                         ret["ret"] = "refresh"
             elif cmd == "reset":
@@ -643,11 +651,20 @@ class FfmpegQueue(object):
                     with self.download_queue.mutex:
                         self.download_queue.queue.clear()
                     for _ in self.entity_list:
+                        # 다운로드중 상태인 경우에만 중지 시도
                         if _.ffmpeg_status == 5:
-                            import ffmpeg
-
-                            idx = _.ffmpeg_arg["data"]["idx"]
-                            ffmpeg.Ffmpeg.stop_by_idx(idx)
+                            # ffmpeg_arg가 있는 경우에만 ffmpeg 모듈로 중지
+                            if _.ffmpeg_arg is not None and _.ffmpeg_arg.get("data") is not None:
+                                try:
+                                    import ffmpeg
+                                    idx = _.ffmpeg_arg["data"].get("idx")
+                                    if idx is not None:
+                                        ffmpeg.Ffmpeg.stop_by_idx(idx)
+                                except Exception as e:
+                                    logger.debug(f"ffmpeg stop error (non-critical): {e}")
+                            # 커스텀 다운로더의 경우 cancel 플래그만 설정
+                            _.cancel = True
+                            _.ffmpeg_status_kor = "취소"
                 self.entity_list = []
                 ret["ret"] = "refresh"
             elif cmd == "delete_completed":
diff --git a/templates/anime_downloader_anilife_queue.html b/templates/anime_downloader_anilife_queue.html
index ee595ec..1688404 100644
--- a/templates/anime_downloader_anilife_queue.html
+++ b/templates/anime_downloader_anilife_queue.html
@@ -259,4 +259,43 @@
         }
 
     </script>
+<style>
+    /* 로딩 인디케이터 오버라이드 */
+    #loading {
+        background: rgba(15, 23, 42, 0.85) !important;
+        backdrop-filter: blur(8px) !important;
+    }
+    
+    #loading img {
+        display: none !important;
+    }
+    
+    #loading::after {
+        content: '';
+        width: 50px;
+        height: 50px;
+        border: 4px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
+    
+    @keyframes spin {
+        to { transform: rotate(360deg); }
+    }
+    
+    #modal_loading img {
+        display: none !important;
+    }
+    
+    #modal_loading::after {
+        content: '';
+        width: 40px;
+        height: 40px;
+        border: 3px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
+</style>
 {% endblock %}
diff --git a/templates/anime_downloader_anilife_request.html b/templates/anime_downloader_anilife_request.html
index 070d7bc..5dedefd 100644
--- a/templates/anime_downloader_anilife_request.html
+++ b/templates/anime_downloader_anilife_request.html
@@ -933,5 +933,43 @@
             transform: rotate(360deg);
         }
     }
+    
+    /* 로딩 인디케이터 오버라이드 */
+    #loading {
+        background: rgba(15, 23, 42, 0.85) !important;
+        backdrop-filter: blur(8px) !important;
+    }
+    
+    #loading img {
+        display: none !important;
+    }
+    
+    #loading::after {
+        content: '';
+        width: 50px;
+        height: 50px;
+        border: 4px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: loader-spin 0.8s linear infinite;
+    }
+    
+    @keyframes loader-spin {
+        to { transform: rotate(360deg); }
+    }
+    
+    #modal_loading img {
+        display: none !important;
+    }
+    
+    #modal_loading::after {
+        content: '';
+        width: 40px;
+        height: 40px;
+        border: 3px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: loader-spin 0.8s linear infinite;
+    }
 </style>
 {% endblock %}
diff --git a/templates/anime_downloader_linkkf_queue.html b/templates/anime_downloader_linkkf_queue.html
index 7de0551..5b0a189 100644
--- a/templates/anime_downloader_linkkf_queue.html
+++ b/templates/anime_downloader_linkkf_queue.html
@@ -307,4 +307,43 @@ function status_html(data) {
 }
 
 </script>
+<style>
+    /* 로딩 인디케이터 오버라이드 */
+    #loading {
+        background: rgba(15, 23, 42, 0.85) !important;
+        backdrop-filter: blur(8px) !important;
+    }
+    
+    #loading img {
+        display: none !important;
+    }
+    
+    #loading::after {
+        content: '';
+        width: 50px;
+        height: 50px;
+        border: 4px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
+    
+    @keyframes spin {
+        to { transform: rotate(360deg); }
+    }
+    
+    #modal_loading img {
+        display: none !important;
+    }
+    
+    #modal_loading::after {
+        content: '';
+        width: 40px;
+        height: 40px;
+        border: 3px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
+</style>
 {% endblock %}
diff --git a/templates/anime_downloader_linkkf_request.html b/templates/anime_downloader_linkkf_request.html
index 11d0093..8c8a02e 100644
--- a/templates/anime_downloader_linkkf_request.html
+++ b/templates/anime_downloader_linkkf_request.html
@@ -934,5 +934,43 @@
             z-index: 99999;
             opacity: 0.5;
         }
+        
+        /* 로딩 인디케이터 오버라이드 */
+        #loading {
+            background: rgba(15, 23, 42, 0.85) !important;
+            backdrop-filter: blur(8px) !important;
+        }
+        
+        #loading img {
+            display: none !important;
+        }
+        
+        #loading::after {
+            content: '';
+            width: 50px;
+            height: 50px;
+            border: 4px solid rgba(96, 165, 250, 0.2);
+            border-top-color: #60a5fa;
+            border-radius: 50%;
+            animation: loader-spin 0.8s linear infinite;
+        }
+        
+        @keyframes loader-spin {
+            to { transform: rotate(360deg); }
+        }
+        
+        #modal_loading img {
+            display: none !important;
+        }
+        
+        #modal_loading::after {
+            content: '';
+            width: 40px;
+            height: 40px;
+            border: 3px solid rgba(96, 165, 250, 0.2);
+            border-top-color: #60a5fa;
+            border-radius: 50%;
+            animation: loader-spin 0.8s linear infinite;
+        }
     </style>
 {% endblock %}
diff --git a/templates/anime_downloader_ohli24_queue.html b/templates/anime_downloader_ohli24_queue.html
index d2a5799..1f5f27b 100644
--- a/templates/anime_downloader_ohli24_queue.html
+++ b/templates/anime_downloader_ohli24_queue.html
@@ -361,6 +361,45 @@
             font-size: 15px;
         }
     }
+    
+    /* 로딩 인디케이터 오버라이드 */
+    #loading {
+        background: rgba(15, 23, 42, 0.85) !important;
+        backdrop-filter: blur(8px) !important;
+    }
+    
+    #loading img {
+        display: none !important;
+    }
+    
+    #loading::after {
+        content: '';
+        width: 50px;
+        height: 50px;
+        border: 4px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
+    
+    @keyframes spin {
+        to { transform: rotate(360deg); }
+    }
+    
+    /* 모달 로딩 인디케이터 오버라이드 */
+    #modal_loading img {
+        display: none !important;
+    }
+    
+    #modal_loading::after {
+        content: '';
+        width: 40px;
+        height: 40px;
+        border: 3px solid rgba(96, 165, 250, 0.2);
+        border-top-color: #60a5fa;
+        border-radius: 50%;
+        animation: spin 0.8s linear infinite;
+    }
 </style>
 
 <script src="{{ url_for('.static', filename='js/sjva_ui14.js') }}"></script>
diff --git a/templates/anime_downloader_ohli24_request.html b/templates/anime_downloader_ohli24_request.html
index 68f427f..380e5d0 100644
--- a/templates/anime_downloader_ohli24_request.html
+++ b/templates/anime_downloader_ohli24_request.html
@@ -1023,5 +1023,44 @@
             background-color: #0dcaf0 !important;
             border-color: #0dcaf0 !important;
         }
+        
+        /* 로딩 인디케이터 오버라이드 */
+        #loading {
+            background: rgba(15, 23, 42, 0.85) !important;
+            backdrop-filter: blur(8px) !important;
+        }
+        
+        #loading img {
+            display: none !important;
+        }
+        
+        #loading::after {
+            content: '';
+            width: 50px;
+            height: 50px;
+            border: 4px solid rgba(96, 165, 250, 0.2);
+            border-top-color: #60a5fa;
+            border-radius: 50%;
+            animation: loader-spin 0.8s linear infinite;
+        }
+        
+        @keyframes loader-spin {
+            to { transform: rotate(360deg); }
+        }
+        
+        /* 모달 로딩 인디케이터 오버라이드 */
+        #modal_loading img {
+            display: none !important;
+        }
+        
+        #modal_loading::after {
+            content: '';
+            width: 40px;
+            height: 40px;
+            border: 3px solid rgba(96, 165, 250, 0.2);
+            border-top-color: #60a5fa;
+            border-radius: 50%;
+            animation: loader-spin 0.8s linear infinite;
+        }
     </style>
 {% endblock %}