diff --git a/extensions/amp-video/0.1/video-cache.js b/extensions/amp-video/0.1/video-cache.js
index d98b204d275a..ae1cf872f28c 100644
--- a/extensions/amp-video/0.1/video-cache.js
+++ b/extensions/amp-video/0.1/video-cache.js
@@ -36,6 +36,7 @@ export function fetchCachedSources(
   // Always set crossorigin attribute so captions can be set.
   if (!videoEl.hasAttribute('crossorigin')) {
     videoEl.setAttribute('crossorigin', '');
+    videoEl.querySelector('video')?.setAttribute('crossorigin', '');
   }
 
   const videoSrc = videoEl.getAttribute('src');