Here's a conversion boosting tool I discovered on Rich Gorman's direct response blog.
Viewbix - Empower your video. Add apps to any video: YouTube, Vimeo, Facebook. Add a call-to-action.
It allows you to add apps, links, social media feeds, QR codes, maps and many other call to actions to your videos.
I tried it on some of my sites and not only did it increase conversions on some...it also helped decrease bounce rates.
You can use their BASIC plan (which is free)... to test it on your websites.
All the best,