Thanks a lot for your inquiry.
You can open the video editor by pressing "K" on your keyboard while you're in Enscape itself - alternatively, you should see the following icons in your Enscape ribbon:
The button to the very left opens the video editor as well.
Perchance you don't see these icons in your ribbon? In that case please also make sure that you're running our latest release of Enscape.
Thanks in advance!