Update app.py

app.py

@@ -68,7 +68,7 @@ def get_duration_video(input_image, prompt, height, width,
                      guidance_scale, steps,
                      seed, randomize_seed, 
                      progress):
-    return steps * duration_seconds + 2
+    return steps * 2 * duration_seconds
         
 def get_duration_image(prompt, height, width, negative_prompt, guidance_scale, steps, seed, randomize_seed, progress):
     return steps