For youtube videos

First disable the rich text editor.

Then copy the imbed code (on the right) completely. Paste the embed code
in the body of the article.

You can also copy and paste the video description.

For google videos:

First disable the rich text editor.

On the right click the “Email, Blog, Post to Myspace” button

Then click the “Embed HTML” and copy the code completely. Paste the embed
code in the body of the article.

You can also copy and paste the video description.