Animation option

I think that frame animations, is not well covered when it comes to guides and tutorials, which is a pity, because it is not a particularly intuitive skill.  It is made more difficult to learn because it can so easily go totally pear shaped.  There are several ways to go about it, with one of the easiest to create layers using Free Transform > Step & Repeat, and then Make Frames from layers. 

So to get you started, make a new layer and put something in it.

Copy the layer, and give it some movement using Free Transform

Then Step & Repeat to create a bunch of layers (Shift Ctrl Alt T)

Go to the Motion Workspace, and Make Frame Animation

Then from the op up at the top right corner of the timeline Make frames from layers

It will use ALL layers, so delete the first frame which is the white background.

Select all of the frames (select the first frame, and Shift select the last frame) and turn on the background layer.

To export your animated GIF go File > Export > Save to web (legacy) and chose GIF.

You can dramatically reduce the file size by limiting how many colours are used

So that's a start.  You can save GIFs from the web by right clicking, and open them in Photoshop. If you are lucky, you can find them with a transparent background.  Especially if you add those parameters to the search string

What makes these so useful  is that you can place your own background image behind the GIF

The white fringe is a problem, and the only solution is to either use it on a white background, or Defringe each layer

Layer > Matting > Defringe

See this tutorial with practice files.

Create animated GIFs |

You can make a Video animation or a frame animation,  Either create a Video timeline or a Frame animation timeline using the Button in the Timeline panel. Use the Button's pull-down menu to select which you want. Select that one and then click on the button.  To create a Video timeline or a Frame animation timeline.

Video Animation have more features you can automate rotation better in a video timeline.  Frame animation support moving layer content but does not support rotating its content.

How you go about creating animations differ between Frame animation and video animations. Here is a video animation of rotating a 3d Photoshop Photo collage. Rotating 3D Photo Collage

Frame animations can be exported as a Gif animation and can also be exported and rendered out as a video.  An MP4 video will have better colors than and animated gif and may even be a smaller file. Video encoding is quite advanced.

One way or an other you can convert a video into an Animated Gif you will lose audio and color will suffer.  Web browsers have no problems playing  MP4 videos and can automatically do so on a web page with the right HTML code.

You can create animated GIFs and a certain amount of video editing with Photoshop, but if you want to do animations properly it mighty be worth having a look at Adobe Animate.

Be sure you have text or layter or (best) Smart Object in your document. Yu can't animate bacground

Open Timeline panel and choose Create Video Timeline option - use the same buton (Create Video Timeline) to create Timeline and starting animating

Open options for your layer and use keyframe to animate them

pawel