sanitize image size

app.py

@@ -47,6 +47,8 @@ def generate(
     width = int(width)
     num_frames = int(num_frames)
     seed = int(seed)
+    height = (height // 64) * 64
+    width = (width // 64) * 64
     if seed < 0:
         seed = -seed
     inference_steps = int(inference_steps)
@@ -217,14 +219,14 @@ with gr.Blocks(title = 'Make-A-Video Stable Diffusion JAX', analytics_enabled =
                     label = 'Width',
                     minimum = 64,
                     maximum = 512,
-                    step = 1,
+                    step = 64,
                     value = 448
             )
             height_input = gr.Slider(
                     label = 'Height',
                     minimum = 64,
                     maximum = 512,
-                    step = 1,
+                    step = 64,
                     value = 448
             )
             fps_input = gr.Slider(