change place submit button

app.py

@@ -128,7 +128,6 @@ with gr.Blocks(theme=gr.themes.Soft(), css=css) as demo:
     with gr.Row():
         with gr.Column():
             input_video = gr.Video(label="Input Video")
-            submit = gr.Button(variant="primary")
         with gr.Column():
             output_video = gr.Video(label="Output Video")
             actual_fps = gr.Markdown("", visible=False)
@@ -153,6 +152,9 @@ with gr.Blocks(theme=gr.themes.Soft(), css=css) as demo:
             value=640,
             step=10,
         )
+    with gr.Row():
+        submit = gr.Button(variant="primary")
+
     example = gr.Examples(
         examples=[
             ["./football.mp4", 0.3, "person, ball, shoe", 640],