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predict.py

@@ -192,9 +192,14 @@ def predict_next_frame(ens, context_frames: np.ndarray) -> np.ndarray:
 
         ens.reset_cache()
 
-        # Detect near-static scene: if last two context frames nearly identical, use copy
-        last_two_diff = np.abs(frames[-2].astype(np.float32) - frames[-1].astype(np.float32)).mean()
-        if last_two_diff < 3.0 / 255.0:
+        # Strict static detection: ALL 7 consecutive pairs must have diff < 1/255
+        all_static = True
+        for i in range(len(frames) - 1):
+            diff = np.abs(frames[i].astype(np.float32) - frames[i + 1].astype(np.float32)).mean()
+            if diff >= 1.0 / 255.0:
+                all_static = False
+                break
+        if all_static:
             last_ctx_uint8 = (last_frame * 255).clip(0, 255).astype(np.uint8)
             ens.direct_cache = [last_ctx_uint8.copy() for _ in range(PRED_FRAMES)]
             result = ens.direct_cache[ens.cache_step]