Photoshop Video Keyframes © Ben Willmore, All rights reserved 8
Keyframes: Make an image zoom over time
One of the things we can do with the images in our videos is make them zoom in
or out over time. Note that to make an image zoom in, it needs to start in a state
that is already scaled down so that we don’t bring it to a resolution that is larger
than 100%, as this would cause the quality to go down.
When we make the image zoom, we don’t want to change the size of the image
frame. We instead want the contents of the image to get bigger within the im-
age’s frame, and this will make things a bit more complicated.
Make sure that the image layer that you want to zoom is active in the Layers
panel. Then, hold down the Command key (Ctrl on Win) and click on the layer
thumbnail. This will create a selection around the contents of the layer. Next, add
a layer mask by clicking on the Layer Mask icon at the bottom of the Layers panel.
This will create a mask that hides everything that’s outside of the active selection.
The layer has no content outside of the active selection but it will after we start
scaling the layer up.
Now if you were to scale the layer as is, Pho-
toshop will assume that the layer mask should
scale with it, and you don’t want that. You
need to tell the layer mask to stay in place
while the contents of the layer changes. To do
this, click on the little link icon between the
layer thumbnail and the mask thumbnail. This
will unlink the layer from the mask so that they
can move independently of one another.
The Transform Keyframe Now the image layer is set up such that it can be scaled
within its frame. In the Timeline, make sure that the image clip is active and that
the playhead is positioned at the beginning of the clip. Then click on the little
triangle to the left of the layer name for the image layer. This will expand a list of
keyframe options. To create the scaling eect, you’ll want to use the keyframe
called Transform.
A layer mask was added to the im-
age layer and we unlinked the layer
and the mask so they can move inde
-
pendently of one another.