change os rename to copy and remove

api/main.py

@@ -26,6 +26,7 @@ import dataset
 from datetime import datetime
 from util.swap_face import swap_face
 from fastapi.staticfiles import StaticFiles
+import shutil
 #test
 
 app = FastAPI()
@@ -135,5 +136,6 @@ def gen_video(name_hash,name,text_content, image_urls,avatar,client_id):
     remote_svc = c.root
     my_answer = remote_svc.call_video(name_hash,name,text_content, image_urls,avatar,client_id) # method call
     
-    os.rename(tmp_video_dir+name_hash+'.mp4',video_dest+name_hash+'.mp4')
+    shutil.copy(tmp_video_dir+name_hash+'.mp4',video_dest+name_hash+'.mp4')
+    os.remove(tmp_video_dir+name_hash+'.mp4')