Animating on video has never been so easy. Every tutorial you’ve watched probably up until now probably seemed like a hassle and just plain ol’ complicated. I know, as a designer, the tutorials i come across these days seem extra complicated for no reason and have you doing things that aren’t actually necessary.
This method is simple. In Photoshop CC:
Add your video timeline. Window > Timeline
Add your Animators toolbar. Window > Extensions > Animators Toolbar Pro
Open or drag and drop your video.
Add a new video layer. Layer > Video Layers > New Blank Video Layer
And boom, you’re ready to start animating.
Watch the 12 principles of animation: https://www.youtube.com/watch?v=uDqjIdI4bF4&t=2s
Make sure your Timeline Shorcuts are turned on. On the timeline toolbar, click the hamburger menu > enable timeline shortcut keys. And you can move through the timeline with the left and right keys. Spacebar to play.