Embed ex. movies on Solutions?

Embed ex. movies on Solutions?

Hi,
 
We are having a Screencast account and would like to embed the movies we have there on our SupportCenter.
When inserting the html code in the solution (Edit HTML) the Preview look good, but after saving/approving the movie doesnt load and just shows blanck screen. And if i then edit the solution, the HTML code has changed!
 
Any idear what to do?

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