When we are trying to insert a file using the WordPress Media Uploader, we will embed them. For images those are attachment display options, for videos those are embed options etc. The embed options can be used to insert something more such as a new format or similar. In this tutorial, we will now see how we can add a new field as an embed option to that part of the WordPress Media Uploader screen.
Extending the WordPress Media Uploader: Embed Options
Igor Benic on March 3, 2017