Update app.py

app.py

@@ -83,7 +83,7 @@ def fourier_transform_drawing(input_image, frames, coefficients, img_size):
     indices = [0] + [j for i in range(1, N + 1) for j in (i, -i)]
 
     # parallelize the computation of coefficients
-    with ThreadPoolExecutor() as executor:
+    with ThreadPoolExecutor(max_workers=8) as executor:
         print("Number of threads used:", executor._max_workers)
         coefs = list(executor.map(lambda n: (compute_cn(f_precomputed, n, t_values), n), indices))