These two After Effects expressions are pretty simple, but they make slide show projects a breeze!! The first, “AutoZoom”, makes a layer zoom (scale) based on the in and out points of the layer.The “zoom” value, is how much it zooms. Positive or negative values will both work.
Next, AutoFade creates fades on head and tail of any clip. The transition is specified in the “transition” variable, which is defined in frames. Note: Presentation is audio only.