diff --git a/test.py b/test.py
index cd64863..0cba0c7 100644
--- a/test.py
+++ b/test.py
@@ -7,8 +7,8 @@ import sys
 import wave
 from datetime import datetime, timedelta
 from enum import Enum, auto
-from typing import Callable, TypedDict
 from io import BytesIO
+from typing import Callable, TypedDict
 
 import cv2
 import emoji
@@ -20,7 +20,6 @@ import pytchat
 import requests
 from cv2 import VideoCapture
 from ephem import Moon, Observer, Sun
-from pydub import AudioSegment
 from pygame import Rect, Surface
 from pygame.font import Font
 from pygame.mixer import Sound
@@ -53,7 +52,6 @@ def main (
                          x = CWindow.WIDTH * 3 / 4,
                          y = CWindow.HEIGHT - 120,
                          balloon = balloon)
-    Video (game, 'snack_time.mp4').play ()
     CurrentTime (game, SYSTEM_FONT)
     try:
         broadcast = Broadcast (os.environ['BROADCAST_CODE'])
@@ -752,14 +750,10 @@ class Broadcast:
         return random.choice (chats)
 
 
-class NicoVideo (Video):
-    ...
-
-
 class Video (GameObject):
     fps:        int
     pausing:    bool            = False
-    sound:      Sound
+    sound:      Sound | None
     surfaces:   list[Surface]
 
     def __init__ (
@@ -776,9 +770,13 @@ class Video (GameObject):
     def _create_sound (
             self,
             path:   str,
-    ) -> Sound:
+    ) -> Sound | None:
         bytes_io = BytesIO ()
-        audio = AudioSegment.from_file (path, format = path.split ('.')[-1])
+        try:
+            from pydub import AudioSegment
+            audio = AudioSegment.from_file (path, format = path.split ('.')[-1])
+        except ModuleNotFoundError:
+            return None
         audio.export (bytes_io, format = 'wav')
         bytes_io.seek (0)
         return pygame.mixer.Sound (bytes_io)
@@ -843,7 +841,8 @@ class Video (GameObject):
     ) -> None:
         self.enabled = True
         self.pausing = False
-        self.sound.play ()
+        if self.sound is not None:
+            self.sound.play ()
 
     def stop (
             self,
@@ -872,6 +871,10 @@ class Video (GameObject):
         super ().update ()
 
 
+class NicoVideo (Video):
+    ...
+
+
 def fetch_bytes_from_url (
         url:    str,
 ) -> bytes | None: