Video Block  – Documentation – WordPress.org

The Video Block is used to insert a video. You can either upload a video or paste in the link to a video elsewhere. This needs to be the url to the video file.

YouTube, Vimeo and other online services do not work in a Video Block you should use the embed block, YouTube or Vimeo block.

⚠️ Using the Upload button may not embed the video if you publish quickly. It is best to click Media Library and upload the video there.

Screenshot of a video block:

There are a lot of setting that can be accessed from the Block Settings sidebar. This can be accessed from the Block Toolbar or the general setting menu.

Once you have opened the sidebar you can add a Poster Frame, an image to show before the movie plays, turn on looping and auto-play.