To embed videos from YouTube, Vimeo, etc. .., there is a plugin called MediaEmbeb which performs its tasks perfectly.

When used in my project I realized that if on the same page we have more of an HTML editor, going to embed a video in one of the first editors, it actually inserts the last of them.

I have been reviewing the code and the solution is very simple.

1. Look for the plugin folder in «.. / CKEditor / plugins / mediaembed /»
2. In that folder locate and open the file «plugin.js»
3. Locate the line:

   CKEDITOR.dialog.add( 'MediaEmbedDialog', function ()

4. And replace it:

   CKEDITOR.dialog.add( 'MediaEmbedDialog', function (editor)

With this simple change everything will work correctly.