Update app.py

app.py

@@ -144,6 +144,17 @@ def Piper(image,positive,negative,motion):
         last_motion = motion
 
     pipe.to(device,dtype)
+
+    if negative=="":
+        return pipe(
+            prompt=positive,
+            height=height,
+            width=width,
+            ip_adapter_image=image.convert("RGB").resize((width,height)),
+            num_inference_steps=step,
+            guidance_scale=accu,
+            num_frames=(fps*time)
+        )
     
     return pipe(
         prompt=positive,
@@ -168,7 +179,7 @@ def infer(pm):
             _do.append(f'{p1}')
         posi = " ".join(_do)
 
-        if neg == "" or pm["i"] == None or posi == "":
+        if pm["i"] == None:
             return None
         out = Piper(pm["i"],posi,neg,pm["m"])
         export_to_gif(out.frames[0],name,fps=fps)