diff --git a/src/config/argument_config.py b/src/config/argument_config.py
index 1f7f223..0bbaa20 100644
--- a/src/config/argument_config.py
+++ b/src/config/argument_config.py
@@ -7,6 +7,7 @@ All configs for user
 from dataclasses import dataclass
 import tyro
 from typing_extensions import Annotated
+from typing import Optional
 from .base_config import PrintableConfig, make_abs_path
 
 
@@ -43,4 +44,4 @@ class ArgumentConfig(PrintableConfig):
     ########## gradio arguments ##########
     server_port: Annotated[int, tyro.conf.arg(aliases=["-p"])]  = 8890 # port for gradio server
     share: bool = False # whether to share the server to public
-    server_name: str = "0.0.0.0" # server name
+    server_name: Optional[str] = "127.0.0.1"  # set the local server name, "0.0.0.0" to broadcast all
diff --git a/src/utils/video.py b/src/utils/video.py
index d32b002..a698412 100644
--- a/src/utils/video.py
+++ b/src/utils/video.py
@@ -12,11 +12,11 @@ import cv2
 
 from .rprint import rlog as log
 
-try:
-    import ffmpeg
-except ImportError as e:
-    log(f'Try to install ffmpeg by: pip install ffmpeg-python==0.2.0', style='bold red')
-    raise(e)
+# try:
+#     import ffmpeg
+# except ImportError as e:
+#     log(f'Try to install ffmpeg by: pip install ffmpeg-python==0.2.0', style='bold red')
+#     raise(e)
 
 from rich.progress import track
 from .helper import prefix