Update app.py

app.py

@@ -644,7 +644,7 @@ with gr.Blocks() as demo:
 
     gr.Examples(
         examples=[
-            ["examples/dolly_left.png", "Dolly-left camera move, sliding left in an open space, revealing a stationary car, off-frame left elements enter the shot, cinematic parallax", "Camera-Control-Dolly-Left"],
+            ["examples/dolly_left.jpg", "Dolly-left camera move, sliding left in an open space, revealing a stationary car, off-frame left elements enter the shot, cinematic parallax", "Camera-Control-Dolly-Left"],
             ["examples/astronaut.png", "An astronaut hatches from a fragile egg...", "Camera-Control-Dolly-In"],
         ],
         fn=generate_video_example,