Video Intro Screen
First you must have video frames added to a folder. See https://dvn-docs.readthedocs.io/en/latest/adding-video.html for more information.
Next thing just open your settings.json and add the following properties:
"videoLoadingScreen": "path/to/video/folder",
"videoLoadingMusic": "NameOfMusic"
videoLoadingMusic is optional and if not specified then no music will be played.
Where path/to/video/folder is the path to your video folder that contains the video frames and NameOfMusic is a given entry of music in the music.json file.
To add music see: https://dvn-docs.readthedocs.io/en/latest/adding-music-and-sound-effects.html
After adding that setting then a video will be displayed before the main menu is shown.
Note: This will not override custom start view and thus a custom start view will always take precedence over this view.)