Here's a video demo (1-minute): <a href="https://www.pdftron.com/blog/webviewer/introducing-webviewer-video-annotations/" rel="nofollow">https://www.pdftron.com/blog/webviewer/introducing-webviewer...</a><p>Here's the documentation: <a href="https://www.pdftron.com/documentation/web/guides/video/" rel="nofollow">https://www.pdftron.com/documentation/web/guides/video/</a>