Just go to imgur and upload the GIF image you want to convert to video. Once you finish uploading, you will see on the right side several links to share it.
If you want to share a specific image or GIF within a post on Imgur, long-press on the image or video you want to share, and a similar menu will appear. You can ...
You can keep the same note around and go back and change the gif and it will change in the message as well so you dont have to make a bunch of notes, ...
I'm trying to figure how I can display GIFS directly on Facebook along with the URL. I see many sites that can do this, like this one: https://imgur.com/3rT9UcR.