First, you will need a Facebook share code. To get this, you should already have a live stream set up or a VOD uploaded.
Second, select that particular live stream or on demand file. Next, go to and look for the Facebook share code here. Copy this code:
Now go to Facebook and start to make a post, either on a friend's wall, your own wall or on a brand page. Now paste that Facebook share code into the post and an image should appear (your account or channel logo). You can add a message to this if you want. When added, viewer can click a play icon in your post to expand and launch the video viewer straight from the Facebook page.