Embedded content is content that imports another resource into the document, or content from another vocabulary that is inserted into the document. This is the same definition as HTML’s embedded content.
Articles on this site may include embedded content (for instance videos, images, articles, etc.).’
Embedded content from other websites behaves in the exact same way as if the visitor has visited the other website.
When the embedded content consists of a single referenced resource (e.g., an ‘image’, ‘video’, or ‘canvas’), the dimensions of the positioning rectangle, in the current coordinate system after applying all transforms, define the specified size for the embedded object.