diff --git a/understanding/20/time-based-media.html b/understanding/20/time-based-media.html
index f5c517d10d..dda7f71b5b 100644
--- a/understanding/20/time-based-media.html
+++ b/understanding/20/time-based-media.html
@@ -40,6 +40,8 @@ <h2>Intent of Time-Based Media</h2>
          <strong>audio-only</strong> or 
          <strong>video-only</strong>, then all the rest of the success criteria apply.
       </p>
+
+     <p class="note">Success criterion <a href="media-alternative-prerecorded">1.2.8 Media Alternative (Prerecorded)</a> is an exception. Although its short name does not include "<strong>video-only</strong>," it still applies to all prerecorded video-only media when aiming to meet WCAG Level AAA.</p>
       
       <p>Media can also be 
          <strong>live</strong> or