diff --git a/nodes_hailuo_video.py b/nodes_hailuo_video.py
index 4771909..b67c41e 100644
--- a/nodes_hailuo_video.py
+++ b/nodes_hailuo_video.py
@@ -34,15 +34,19 @@ class XB_HailuoH3VideoParams:
                 "multiple": ("INT", {"default": 32, "min": 8, "max": 128, "step": 4}),
                 "frames_display": ("STRING", {"default": "Frames: 0", "multiline": False}),
                 "duration": ("INT", {"default": 8, "min": 4, "max": 15, "step": 1}),
+                "scale_factor": ("FLOAT", {
+                    "default": 1.0, "min": 1.0, "max": 5.0, "step": 0.1,
+                    "tooltip": "放大系数 — 接入「MiniMax H3 参考编码」的参考值放大"
+                }),
             }
         }
 
-    RETURN_TYPES = ("INT", "INT", "INT", "INT")
-    RETURN_NAMES = ("Width", "Height", "Frames", "Scale Size")
+    RETURN_TYPES = ("INT", "INT", "INT", "FLOAT")
+    RETURN_NAMES = ("Width", "Height", "Frames", "放大系数")
     FUNCTION = "process"
     CATEGORY = "XB_ToolBox/Image_Params"
 
-    def process(self, aspect_ratio, megapixels, multiple, frames_display, duration):
+    def process(self, aspect_ratio, megapixels, multiple, frames_display, duration, scale_factor):
         # ── 分辨率：官方 ResolutionSelector 公式 ──
         w_ratio, h_ratio = ASPECT_RATIOS.get(aspect_ratio, (16, 9))
         total_pixels = megapixels * 1024 * 1024
@@ -54,4 +58,4 @@ class XB_HailuoH3VideoParams:
         base = max(5, round(duration * 24))
         safe_len = base + (5 - (base % 17)) % 17
 
-        return (safe_w, safe_h, safe_len, max(safe_w, safe_h))
+        return (safe_w, safe_h, safe_len, scale_factor)