You can animate different layer properties, such as position, opacity, and style. Each change can occur independently of, or simultaneously with, other changes. If you want to animate different objects independently, it’s best to create them on separate layers.
For a video on creating animations from images, see www.adobe.com/go/vid0124.
You can animate position by adding a keyframe to the Position property, then moving the current time indicator and dragging the layer in the document window.
You can animate a layer’s opacity by adding a keyframe to the Opacity property, then moving the current time indicator and changing the layer’s opacity in the Layers palette.
To animate a property using keyframes, you must set at least two keyframes for that property. Otherwise, changes that you make to the layer property remain in effect for the duration of the layer.
Each layer property has a Time‑Vary Stopwatch icon that
you click to begin animating. When the stopwatch is active for a
specific property, Photoshop automatically sets new keyframes whenever
you change the current time and the property value. When the stopwatch
is inactive for a property, the property has no keyframes. If you
type a value for a layer property while the stopwatch is inactive,
the value remains in effect for the duration of the layer. If you
deselect the stopwatch, you will permanently delete all of the keyframes
for that property.
In the Animation palette, the appearance of a keyframe depends on the interpolation method you choose for the interval between keyframes. See also Choose interpolation method (Photoshop Extended).
After you set the initial keyframe for a property, Photoshop displays the keyframe navigator, which you can use to move from keyframe to keyframe or to set or remove keyframes. When the keyframe navigator box is selected, the current-time indicator lies precisely at a keyframe for that layer property. When the keyframe navigator box is deselected, the current-time indicator lies between keyframes. When arrows appear on each side of the keyframe navigator box, other keyframes for that property exist on both sides of the current time.
To select a keyframe, click the keyframe icon.
To select multiple keyframes, Shift-click the keyframes or drag a marquee around the keyframes.
To select all keyframes for a layer property, click the layer property name next to the Stopwatch icon.
You can copy keyframes in the same layer or between layers for the same property (such as Position). Copied keyframes are pasted at the proportional distance from the current-time indicator.
You can copy keyframes from only one layer at a time. When you paste keyframes into another layer, they appear in the corresponding property in the destination layer. The earliest keyframe appears at the current time, and the other keyframes follow in relative order. The keyframes remain selected after pasting, so you can immediately move them in the timeline.
Deleting keyframes can be useful when (for example), you make a mistake while setting keyframes, or if you decide a keyframe is no longer needed.
Open the Animation palette menu and choose Delete Keyframes.
Right-click (Windows) or Control-click (Mac OS) and choose Delete from the Context menu.