diff --git a/sim_lab/vr_demo.py b/sim_lab/vr_demo.py
index 21d8742b1986468d649e472f0c4f714d3440fead..26513dd03d0e9fa5c7cf3c6fb17d5dc07a170da1 100644
--- a/sim_lab/vr_demo.py
+++ b/sim_lab/vr_demo.py
@@ -71,6 +71,8 @@ if __name__ == '__main__':
     def on_ready():
         from ursina import window
         window.size = (3840, 1920)
+        # 黑色背景的宇宙背景
+        # SphereSky(texture='../../textures/bg_black.png')
 
     UrsinaEvent.on_ready_subscription(on_ready)
 
diff --git a/simulators/ursina/entities/video_recorder.py b/simulators/ursina/entities/video_recorder.py
new file mode 100644
index 0000000000000000000000000000000000000000..9a8d04718aeed4004cbcefb81dd78bee03b16d05
--- /dev/null
+++ b/simulators/ursina/entities/video_recorder.py
@@ -0,0 +1,47 @@
+from ursina import *
+import os, shutil
+import builtins
+import numpy as np
+
+
+class VideoRecorder(Entity):
+    """
+    from simulators.ursina.entities.video_recorder import VideoRecorder
+    vr = VideoRecorder()
+    sys.modules["__main__"].update = vr.screenshot
+
+    app.run()
+    """
+    def __init__(self, temp_dir="screenshot_tmp", asset_folder=None):
+        self.temp_dir = temp_dir
+        # self.save_as_dir = save_as_dir
+        if asset_folder is None:
+            asset_folder = application.asset_folder
+        # G:\works\gitcode\universe_sim\sim_scenes\science
+        self.file_path = Path(asset_folder) / self.temp_dir
+        self.duration = 1.0
+        self.fps = 30
+        self.sd = 5
+        self.t = 0
+        self.i = 0
+        self.id_no = 0
+
+        if getattr(builtins, 'base', None) is not None:
+            if self.file_path.exists():
+                # os.rmdir(self.file_path)
+                shutil.rmtree(self.file_path)
+
+            self.file_path.mkdir()
+
+    def screenshot(self):
+        self.t += time.dt
+
+        if self.t >= 1 / self.fps:
+            base.saveCubeMap(
+                namePrefix=f'\\{self.temp_dir}\\cmap_' + str(self.i).zfill(self.sd) + '_#.png',
+                size=1024
+                # namePrefix = 'cube_map_#.png'
+            )
+        self.t = 0
+
+        self.i += 1