diff --git a/.changeset/afraid-bags-lose.md b/.changeset/afraid-bags-lose.md
new file mode 100644
index 000000000000..17d1806a0008
--- /dev/null
+++ b/.changeset/afraid-bags-lose.md
@@ -0,0 +1,5 @@
+---
+"gradio": patch
+---
+
+feat:Extract video filenames correctly from URLs
diff --git a/gradio/components/video.py b/gradio/components/video.py
index 901287383394..34e7b3cf10d2 100644
--- a/gradio/components/video.py
+++ b/gradio/components/video.py
@@ -275,9 +275,8 @@ def _format_video(self, video: str | Path | None) -> FileData | None:
                 "Video does not have browser-compatible container or codec. Converting to mp4"
             )
             video = processing_utils.convert_video_to_playable_mp4(video)
-        # Recalculate the format in case convert_video_to_playable_mp4 already made it the
-        # selected format
-        returned_format = video.split(".")[-1].lower()
+        # Recalculate the format in case convert_video_to_playable_mp4 already made it the selected format
+        returned_format = utils.get_extension_from_file_path_or_url(video).lower()
         if self.format is not None and returned_format != self.format:
             if wasm_utils.IS_WASM:
                 raise wasm_utils.WasmUnsupportedError(
diff --git a/gradio/utils.py b/gradio/utils.py
index 8416d630f966..e724480e8247 100644
--- a/gradio/utils.py
+++ b/gradio/utils.py
@@ -15,6 +15,7 @@
 import threading
 import traceback
 import typing
+import urllib.parse
 import warnings
 from abc import ABC, abstractmethod
 from contextlib import contextmanager
@@ -969,3 +970,13 @@ def default_input_labels():
     while True:
         yield f"input {n}"
         n += 1
+
+
+def get_extension_from_file_path_or_url(file_path_or_url: str) -> str:
+    """
+    Returns the file extension (without the dot) from a file path or URL. If the file path or URL does not have a file extension, returns an empty string.
+    For example, "https://example.com/avatar/xxxx.mp4?se=2023-11-16T06:51:23Z&sp=r" would return "mp4".
+    """
+    parsed_url = urllib.parse.urlparse(file_path_or_url)
+    file_extension = os.path.splitext(os.path.basename(parsed_url.path))[1]
+    return file_extension[1:] if file_extension else ""
diff --git a/test/test_utils.py b/test/test_utils.py
index 71b8c2571da5..9b49872ff7ff 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -22,6 +22,7 @@
     delete_none,
     format_ner_list,
     get_continuous_fn,
+    get_extension_from_file_path_or_url,
     get_type_hints,
     ipython_check,
     is_in_or_equal,
@@ -402,3 +403,16 @@ def test_is_in_or_equal():
     assert is_in_or_equal("/home/usr/notes.txt", "/home/usr/")
     assert not is_in_or_equal("/home/usr/subdirectory", "/home/usr/notes.txt")
     assert not is_in_or_equal("/home/usr/../../etc/notes.txt", "/home/usr/")
+
+
+@pytest.mark.parametrize(
+    "path_or_url, extension",
+    [
+        ("https://example.com/avatar/xxxx.mp4?se=2023-11-16T06:51:23Z&sp=r", "mp4"),
+        ("/home/user/documents/example.pdf", "pdf"),
+        ("C:\\Users\\user\\documents\\example.png", "png"),
+        ("C:/Users/user/documents/example", ""),
+    ],
+)
+def test_get_extension_from_file_path_or_url(path_or_url, extension):
+    assert get_extension_from_file_path_or_url(path_or_url) == extension