To configure your video to automatically collect information about your viewer, press "Settings' on your video and find the section labeled "Choose Viewer Info to Capture", which looks like this:

You can choose which information to capture, including name, email, and phone. You can choose whether it's required and when to capture it - at first interaction or at the start of the video. For marketing purposes, we recommend first interaction so you don't experience drop off. For training and other internal purposes, capturing it at the start of the video is recommended for the least disruption. 

Once captured, all video views from that same browser will be logged under the Viewer record, so you can start building a profile of what they watched and the interactions they took. 

Further, all information captured in this way is available for use as personalized variables later in the video if on a Core plan. So you can use {{name}}, {{email}}, or {{phone}} in any later interaction, including button, hotspot, text or question.