Zoho Desk embedding screencast video

Zoho Desk embedding screencast video

I have an account with TechSmith Camtasia and their screencast.com system,  it allows a method of hosting videos similar to YouTube but without advertising etc

I am trying to add a html embedded video from my screencast.com account to my Desk - KB articles
unfortunately at present i am stumped on my first article

it lets me add but seems to strip out the video aspects on save
help please

Below is what i paste 

<!-- copy and paste. Modify height and width if desired. --><iframe class="tscplayer_inline embeddedObject" name="tsc_player" scrolling="no" frameborder="0" type="text/html" style="overflow:hidden;" src="https://www.screencast.com/users/CostManager/folders/CostManager/media/f2dbda69-b712-492c-bc05-1b4644c44244/embed" height="1054" width="1920" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>

it seems to show in the kb article right up to the save point

if i go back and edit the kbs' html i get

<div>
   <iframe allowfullscreen="" width="1920" height="1054" style="overflow: hidden;" class="tscplayer_inline embeddedObject">
   </iframe>
   <br />
</div>
<div>
   <br />
</div>
<div>
   .
</div>

sure i can add as a link but that sort of defeats the object

I got around by uploading to YouTube  but it isnt ideal as we get advertising at the end of the videos (which we would prefer not to have)

Kevin