I disagree! Slideshows are just pictures, could be fake or airbrushed, but in real video would be it very difficult to fake something.
If you really want to show to the clients a real not fake girl, it should be only real videos allowed. In the internet is "Any movie converter" for free for to download, so it is not problem to convert wma, mpeg, mpeg II, avi etc.
My opinion.
What do you mean guys???