Your subdomain (e.g. your-capsule-slug.capsule.video) or, in the case of a custom domain, the full domain replacing "." with "-" (e.g. www-yourdomain-com)
id
The ID of the video you're embedding. This is the unique ID at the end of the URL when viewing a video in a public-facing Capsule.
el
Optionally specify an #id or .class to append Capsule content within an existing div rather than inline below this script tag