Darkroom Booth can play videos at any point during a session.". In the Global settings section under Device Control choose the session event you want the video to play at then click on Add then in that drop down choose Video. You can use video in formats WMI, AVI, and MP4. The video will play at its own resolution or can be set to full screen. Other booth activities will pause until the video finishes playing.
Here is a video on using video in Darkroom Booth.