When you add content to a Samcart lesson, you have the option of adding different types of content. One of the options is to add a Video, however Samcart only allows the URL to be added (not embed code) and does not yet have an integration with Spotlightr.
So to add a video, please choose the "Add Text" option here:
When you add content to a lesson, please use the "Code View" option here to switch to code view:
Then simply copy and paste our embed code.
Once that's done, you can click the "View Code" button again and you will see the video instead of the embed code:
If you have any further questions or issues please contact support.