diff --git a/README.md b/README.md
index 5319c0a..9381caa 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,11 @@ Automatically open a bunch of random websites to thwart attempts at [illegal
 internet surveillance](https://ulovliglogning.dk/). Privacy through obscurity?
 
 
-<video src="img/preview.mp4" width="320" height="240" controls></video>
 
+<video controls>
+  <source src="img/preview.mp4" type="video/mp4">
+  <p>Your browser doesn't support HTML5 video. Here is a <a href="https://user.keybase.pub/demo.mp4">link to the video</a> instead.</p>
+</video>
 
 # Getting Started
 ```shell