Mala can do one animated gif per layout, but it has to be the same size as the layout resolution wise (full size, i.e. 800x640, etc.) with the animation wherever in that gif area that you want it to be in the final layout, so you'll have to get into a gif editor to set that up.
also, you can take an image and scroll it up or across the screen, up to four images per layout I think.
and game videos are handled as a separate object.
This is from memory but it's covered in the documentation of mala layout editor. Also, I know Mike Boss here has done it before in his layouts.