Adding a video – instead of image – into slider

Hi Experts. I have uploaded an 18 meg test video into my media file, and in the back-end it plays, but although it set to be in my slider as my first slide it does not show up anywhere. How can I get this video into my slider ?

Here are the specs the media center shows:
File type: MP4 (video/quicktime)
File size: 18 MB
Length: 1:08
Bitrate: 89kb/s
Dimensions: 1280 × 720 (**if this is the issue I have no idea how to size a video-please advise)

The video does not show a slide image at the bottom where we can arrange slider order.

Any answers would be awesome. You guys are the best forum !

Thank you, Adwords-expert.net
Mike