Small improvements for video loading (#9183)

* update

* update

src/diffusers/utils/loading_utils.py

 import os
 import tempfile
 from typing import Callable, List, Optional, Union
+from urllib.parse import unquote, urlparse
 
 import PIL.Image
 import PIL.ImageOps
@@ -80,12 +81,22 @@ def load_video(
         )
 
     if is_url:
-        video_data = requests.get(video, stream=True).raw
-        suffix = os.path.splitext(video)[1] or ".mp4"
+        response = requests.get(video, stream=True)
+        if response.status_code != 200:
+            raise ValueError(f"Failed to download video. Status code: {response.status_code}")
+
+        parsed_url = urlparse(video)
+        file_name = os.path.basename(unquote(parsed_url.path))
+
+        suffix = os.path.splitext(file_name)[1] or ".mp4"
         video_path = tempfile.NamedTemporaryFile(suffix=suffix, delete=False).name
+
         was_tempfile_created = True
+
+        video_data = response.iter_content(chunk_size=8192)
         with open(video_path, "wb") as f:
-            f.write(video_data.read())
+            for chunk in video_data:
+                f.write(chunk)
 
         video = video_path