What ever gets put between the [kick] tags is going to be what {param} turns into
. So, in your example here, the whole URL in the embed code ends up being a mixture of two URLs. That's one problem that will keep it from working, but the other appears to be the embed URL isn't what they use at Kickstarter. Their current video embed is different, so try this as your Replacement instead.
Code:
<iframe width="480" height="360" src="{param}/widget/video.html" frameborder="0"> </iframe>
Or if you want the widget instead, try this:
Code:
<iframe frameborder="0" height="380" src="{param}/widget/card.html" width="220"></iframe>