The slider has built-in support for YouTube and Vimeo videos. Other formats, like HTML5 video, VideoJS and SublimeVideo are also supported by adding the correct HTML markup inside a DIV layer. However, for YouTube and Vimeo videos there is a UI that allows you to easily publish such videos.
The support consists in the slider's ability to control the videos automatically (i.e., pause the video when the slide is closed, play the video when the slide is opened, etc.).
Videos can be added in the Layers editor, as Video Layers.
In the admin area, in slider's Video sidebar panel, you can set how the video will react to the opening or closing of slides.