gtk:video-media-stream (object)

object -- a gtk:video widget
stream -- a gtk:media-stream object to play or nil to unset

The accessor for the media-stream slot of the gtk:video class gets or sets the media stream managed by object. Returns nil if none. The object argument will take full control of managing the media stream. If you want to manage a media stream yourself, consider using a gtk:picture widget for display.

If you want to display a file, consider using the gtk:video-file function instead.