Update app.py

app.py

@@ -486,11 +486,16 @@ def on_video_url_change(url, use_blip):
     global current_video_file, current_video_url, blip_generated_name, original_filename
     
     if not url or url.strip() == "":
-        current_video_file = None
-        current_video_url = None
-        blip_generated_name = ""
-        original_filename = ""
-        return None, "", "Enter a video URL (MidJourney or Civitai supported)"
+        # WICHTIG: Nur State löschen wenn wir kein Upload-Video haben!
+        # Sonst würde Upload → URL clear → Video verschwinden
+        if current_video_file is None:
+            current_video_url = None
+            blip_generated_name = ""
+            original_filename = ""
+            return None, "", "Enter a video URL (MidJourney or Civitai supported)"
+        else:
+            # Upload-Video ist aktiv, URL wurde nur geleert - nichts ändern
+            return gr.update(), gr.update(), gr.update()
     
     try:
         source = detect_video_source(url)