Sure thing. It may take a little work to get the first description going, but once you do, you can use this method to add 'real' descriptions to each video (if you want) as well as the Open Graph tags you're looking for.
Get
Advanced Module Manager
. It's an awesome extension which lets you really tailor on what pages modules will display. The extension is completely free, but if you use it on a commercial site, it's suggested you get a license, which we have when we use it. It helps continue development of that great extension.
So, get that and install it. Then,
1) Go to the Module Manager and create a new "Custom HTML" module.
2) In the Custom HTML area, you can set your own custom description for a video and set the Open Graph tags as mentioned before {JFBCGraph title=This Video's Title}
3) Click to open the Module Assignment parameters. In here, we're going to specify that this module should only show up on the specific video's page
4) Click into the URL section, and you can set the specific URLs that this module should show on.
You shouldn't need to set any other parameters in there.
Once this is done, if you have a description you actually want displayed to the user (not just Open Graph tags), you can set it into a normal template position that may show to the user on the page.
Hope that helps, and good luck. It's definitely more complicated than if this was built into HWDShare, and it's unfortunate that that can't be added easily, but hopefully will work for you!