diff --git a/draw.py b/draw.py
index b2ff4c9..bcbbbca 100644
--- a/draw.py
+++ b/draw.py
@@ -555,13 +555,46 @@ print(f"[draw] 渲染方式: {mode_str}")
 print(f"[draw] 绘图参数: ball_radius={ball_radius}, box_color=({box_color_r:.2f},{box_color_g:.2f},{box_color_b:.2f}), alpha={alpha_list}")
 
 
-# 运动相机（速度段驱动）
-_CAM_MOTION = json.loads(h.get("camera_keyframes", "null")) if h.get("camera_keyframes") else None
+# 运动相机（速度段驱动）：优先读取 move_camera.txt，其次用 display.txt header 缓存
+import re as _re
+
+def _load_move_camera_txt():
+    """直接读取 input/move_camera.txt（与 output 同级的 input 目录）。"""
+    input_dir = os.path.join(os.path.dirname(output_dir), "input")
+    cam_path = os.path.join(input_dir, "move_camera.txt")
+    if not os.path.exists(cam_path):
+        return None
+    segs = []
+    with open(cam_path, "r", encoding="utf-8") as f:
+        for line in f:
+            line = line.strip()
+            if not line or line.startswith("#"):
+                continue
+            m = _re.match(r'(\d+)\s*-\s*(\d+)', line)
+            if not m:
+                continue
+            start, end = int(m.group(1)), int(m.group(2))
+            v, r = [0.0, 0.0, 0.0], [0.0, 0.0, 0.0]
+            for i, axis in enumerate(['x', 'y', 'z']):
+                m2 = _re.search(r'v' + axis + r'\s*=\s*([-\d.]+)', line)
+                if m2: v[i] = float(m2.group(1))
+                m2 = _re.search(r'r' + axis + r'\s*=\s*([-\d.]+)', line)
+                if m2: r[i] = float(m2.group(1))
+            if any(v) or any(r):
+                segs.append({"start": start, "end": end, "v": v, "r": r})
+    return segs if segs else None
+
+# 先试 move_camera.txt 直读，没有则用 display.txt 缓存
+_CAM_MOTION = _load_move_camera_txt()
+if not _CAM_MOTION:
+    _CAM_MOTION = json.loads(h.get("camera_keyframes", "null")) if h.get("camera_keyframes") else None
 if _CAM_MOTION:
     _cam_center = [0.0, 0.0, 0.0]
     _cam_elev = initial_camera["elevation"]
     _cam_azim = initial_camera["azimuth"]
     _cam_dist = initial_camera["distance"]
+    src = "move_camera.txt" if _load_move_camera_txt() else "display.txt header"
+    print(f"[draw] 运动相机已启用（数据来源: {src}，{len(_CAM_MOTION)} 段）")
 
 
 def _update_motion_camera(f_idx):
diff --git a/examples/case06/input/input.txt b/examples/case06/input/input.txt
index addbf2f..bab4691 100644
--- a/examples/case06/input/input.txt
+++ b/examples/case06/input/input.txt
@@ -105,4 +105,4 @@ box_color_b:  0.85
 camera_distance:  40.0   # 摄像机到场景中心的距离
 camera_elevation: 0      # 俯仰角（度），负值=俯视
 camera_azimuth:   0      # 方位角（度）
-move_camera:      0      # 0=固定视角, 1=按 move_camera.txt 运动
+move_camera:      1      # 0=固定视角, 1=按 move_camera.txt 运动
diff --git a/examples/case06/input/move_camera.txt b/examples/case06/input/move_camera.txt
index ccb9fc4..50d45aa 100644
--- a/examples/case06/input/move_camera.txt
+++ b/examples/case06/input/move_camera.txt
@@ -5,5 +5,4 @@
 #     rx → elevation（俯仰）, ry → azimuth（方位）, rz → (预留)
 #
 # 示例：前60帧向右平移+绕x旋转，30-90帧向上平移+绕y绕z旋转
-1-60   vx=1.0  rx=10
-30-90  vy=2.0  ry=20  rz=10
+1-200   vx=0.01