add app.py

app.py

@@ -0,0 +1,13 @@
+import gradio as gr
+
+def video_identity(video):
+    return video
+
+
+demo = gr.Interface(video_identity, 
+                    gr.Video(), 
+                    "playable_video", 
+                    )
+
+if __name__ == "__main__":
+    demo.launch()