Use the Duration toggle to determine how long your fade will last.Your shape will appear on your video timeline like any other layer. Draw your shape where you want it to be in the video.To shorten or extend the length of a layer, hover over the front or end of the layer rectangle on the timeline and drag it shorter or longer. You can select your layer in either the Timeline or the Layers Panel and either drag them to be in the order you want them, or use Command- to move them up or down. Moving layers in Photoshop video is very much the same as moving them in regular Photoshop documents. You can shrink or expand your media by hitting Command-T to select your media, then pulling on the image.

Once your video or photo has been moved to your working video document, resize your media to fit (if needed).

A duplicate layer box will appear, in Destination select the document you’d like your video or photo to be in.

Right click on the layer once it’s in Photoshop and select Duplicate Layer.

After you create your doc, go to Timeline.

Not seeing the size you need? You can build a custom video size by typing in the pixel width and height on the right hand size then selecting create.

Choose the video size your project calls for.

Ps video editing