Why embed video can in news and not blogs...

I have a code:

<script src="https://www.vooplayer.com/v3/watch/video.js"></script><iframe id="" voo-auto-adj="true" allowtransparency="true" style="max-width:100%" name="vooplayerframe" allowfullscreen="true" src="//www.vooplayer.com/v3/watch/watch.php?v=MTAwMzEz&clearVars=1" frameborder="0" scrolling="no" width="660" height="380" > </iframe>

But when i add it in blogs, the code is broken.

In news not.. but in news it's working...

The two looks the same... I don't understand.

Can explain me why, and how to add it in blogs? 

You need to add allowed iframes so the htmlpurifier won't strip them out.  When you add content in the backend as admin, then htmlpurifier is not invoked.  I wrote a tutorial on adding allowed iframes to a whitelist.

This will explain how to do it:

https://www.boonex.com/forums/topic/HTMLpurifier-adding-other-iframe-conditions-.htm

Ook, thanks.

I will read it...