Add Facebook Share Button with Video to Website - facebook

Question

I am adding a Facebook Share button to my website. I am able to set it up to include a picture in the post, but I'd like it to include a video. How would I do this using the FB.ui feed parameters?
Here is my working code for adding a picture:
<!-- Facebook share script -->
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.3&appId=*********";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
<div class="fb-share-button" data-href="#{#project_url}" data-layout="icon">
<%= image_tag "facebook.png", :class=>"social_icon" %>
</div>
$('.fb-share-button').click(function(e){
e.preventDefault();
FB.ui(
{
method: 'feed',
name: "<%=#project.user.username%>",
link: '<%=#project_url%>',
picture: '<%=#project.images.first.image_file_url%>',
caption: ' ',
description: ' ',
message: ''
});
});

Answer 1

You need to specify the url to the video in the source parameter. You can read more here.
source: The URL of a media file (either SWF or MP3) attached to this
post. If SWF, you must also specify picture to provide a thumbnail for
the video.

Answer 2

Instead of using the FB feed method, I used share, and this drew from the metatags I included for my webpage. This ended up working!
For reference, this is what it looked like:
$('.fb-share-button').click(function(e){
e.preventDefault();
FB.ui({
method: 'share',
href: '<%=#project_url%>',
}, function(response){});
});
and my metatags:
<!-- Facebook tags -->
<meta property="fb:app_id" content="811332718952118"/>
<meta property="og:type" content="video.other"/>
<meta property="og:url" content="<%=#project_url%>" />
<meta property="og:title" content="<%=#project.user.username%>'s Spin" />
<meta property="og:description" content=" " />
<meta property="og:video" content="<%=#project.video.video_file_url%>" />
<meta property="og:video:type" content="video/mp4" />
<meta property="og:video:width" content="700"/>
<meta property="og:video:height" content="700"/>
<meta property="og:image" content="<%=#project.spins.first.images.order(:position).first.image_file_url%>" />