Navigate to the Visualization section and in the Left side menu, look for the Add video input field.
The first field allows you to choose which host your video is streaming from ( Youtube or Vimeo ). Next you will need to provide the Video ID which can be found within the URL of the video itself.
Youtube URL
For Youtube videos, copy and paste the text that comes after ?v=
Vimeo URL
For Vimeo videos, copy and paste the text that comes after /
All that is left, is to paste it into the Video ID field and click Add
Once you add the video, we can view it if we open up the Live Preview.
Youtube video inside the configurator
Warning: If you have a Media Gallery with a Position set to Inside, it will interfere with the Video Timeline.