diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index adc94e72..c9c7f50d 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -419,7 +419,13 @@
 (with-eval-after-load 'ytdl
   (setq ytdl-always-query-default-filename 'yes)
   (setq ytdl-max-mini-buffer-download-type-entries 0)
-  (setq ytdl-download-extra-args '("-f" "best")))
+  (setq ytdl-download-extra-args '("-f" "best"))
+  (require 'patch-ytdl)
+  (defun ytdl-no-proxy ()
+    (interactive)
+    (let ((ytdl-download-extra-args (cons "--proxy="
+                                          ytdl-download-extra-args)))
+      (ytdl-download))))
 
 (with-eval-after-load 'ztree
   (set-face-foreground 'ztreep-diff-model-add-face "deep sky blue"))
diff --git a/.emacs.d/lisp/patch-ytdl.el b/.emacs.d/lisp/patch-ytdl.el
new file mode 100644
index 00000000..e9b2dbdb
--- /dev/null
+++ b/.emacs.d/lisp/patch-ytdl.el
@@ -0,0 +1,28 @@
+(defun ytdl--get-default-filename (url)
+  "Get default filename from web server.
+
+Query the default-filename of URL using '--get-filename' argument
+of ytdl."
+  (if (equal ytdl-always-query-default-filename
+             'never)
+      nil
+    (with-temp-buffer
+      (apply #'call-process ytdl-command nil t nil
+             (append ytdl-download-extra-args
+                     (list
+                      "--get-filename"
+                      "--restrict-filenames"
+                      "--" url)))
+      (goto-char (point-min))
+      (if (search-forward-regexp "^ERROR" nil t)
+          (progn
+            (beginning-of-line)
+            (error (buffer-substring-no-properties (line-beginning-position)
+                                                   (line-end-position))))
+        (search-forward ".")
+        (replace-regexp-in-string "/\\|_"
+                                  "-"
+                                  (buffer-substring-no-properties (line-beginning-position)
+                                                                  (1- (point))))))))
+
+(provide 'patch-ytdl)