Hi Sara,
Sorry, the option is Recording Slide, Video Demo (didn't have Captivate open, was in college teaching). You cannot add the raw cpvc-file to a cptx file, you can only insert it as a video. Was one of my first feature requests during prerelease, to be able to insert a cpvc as a recording slide, but it didn't make it to the release.
Lilybiri
PS Missed the part about SCO, but what is the sense of turning a video into a SCO-object, since it is not interactive???