An oral defense of the work a student submits, inside the Moodle course they already use.
The student submits a file. After submission the file locks. A short defense then opens: preparation time with speaker notes, then a timed recording for each question. Stream transcribes the answers, checks that the explanation matches the locked file, and returns a score to the gradebook.
Stream Voice is an activity inside Moodle, next to the video tools you already use. It needs the Stream connection that is already configured for the site. Installing the activity does not replace capture, captions or the media library.
The check is whether the student can explain and justify the work. It is not a detector for who wrote the file.