In the video, there are some solutions like nofollow, Robots.txt and more. You can take a look on the following suggestions too.
1. You can use the canonical of respective product page/category page on all the dynamic/filter pages.
2. If you are facing the issue, Google webmaster is reporting duplicate meta tags because all pages are indexed and they are containing meta tags of the main page. Then you can go for the dynamic meta tags.
But using canonical of the main page is the best option. Hope these suggestions will help you! :)