try different width and height settings

app.py

@@ -312,7 +312,7 @@ with gr.Blocks(theme='WeixuanYuan/Soft_dark') as demo:
     gr.Markdown(DESCRIPTION)
     with gr.Column():
         #with gr.Row():
-        in_video = gr.PlayableVideo(label="Input Video", elem_id='input-video', format='mp4', width=400, height=400, interactive=True)
+        in_video = gr.PlayableVideo(label="Input Video", elem_id='input-video', format='mp4', width='400px', height='400px', interactive=True)
             
     with gr.Row():
         run_button = gr.Button(value="Run", elem_id='run-button', scale=1)