The classic editor is the original WordPress editing experience before Gutenberg was integrated into WordPress a few years ago.
Now not everyone wants to use Gutenberg, so WordPress released the Classic Editor plugin that restores the old editing experience for WordPress.
Presto Player is a Gutenberg block based plugin, so the blocks that we have are not available when using the Classic Editor plugin on your website.
The good news is, we have the Media Hub which allows you to use Presto Player with non block based builders including the Classic Editor plugin.
Simply create a new video in the Media Hub.
Then copy the shortcode and past it wherever you would like your video. This will work in the Classic Editor and page builders.
And Presto, it's that easy.