lgtm

frontend/src/components/home/HomePage.tsx

@@ -146,7 +146,14 @@ function ProductDemoVideo() {
           onPlay={() => setIsVideoPlaying(true)}
           onPause={() => setIsVideoPlaying(false)}
           onEnded={() => setIsVideoPlaying(false)}
-        />
+        >
+          <track
+            kind="captions"
+            srcLang={(i18n.language ?? 'en').split('-')[0]}
+            label="Captions"
+            src={`/video/${productDemoSlug}.vtt`}
+          />
+        </video>
         {!isVideoPlaying && (
           <div className="pointer-events-none absolute inset-0 flex items-center justify-center bg-navy-950/15 transition-colors">
             <button