This comment is only for those who are interested in this subject and are having difficulties with it. Media URLs are essentially links that lead to images, videos or any sort of posts that come from somewhere on the internet. to be able to share it, you'll have to find it on a browser, then right click it to then be led to many choices. You may see the option "copy z URL", and so you'll go ahead and click on that. Then, share it on any type of messenger or social media by right clicking the text bar and paste, or go off to clicking on the media sharer if available, and then paste if asked the URL.