In our courses, we sometimes use videos as a prompt to start a discussion. The video is most likely to be included in the viewing section (aka Multimedia or Watch this), and possibly a link would be included in the prompt itself. It’s also possible to streamline the discussion flow by removing the permission to create a new thread on the student part. As creative as we can get when we push against Blackboard limitations, the result is not often optimal. I am going to show a couple of options where the interface is way friendlier.
This is a good social tool for annotating videos. You may use it with your own video from YouTube or use other people’s videos. It’s clean, may create a conversation among viewers (signing in with an existing account, such as Google user, required for responses and adding notes, but not for viewing). Create as many as you want. (Optional viewing)
Another similar service is provided by Vialogues. Here, too you can have a discussion (text discussion) of whatever is happening on the screen, plus the discussion can be guided by preset comments/annotations for others to react to in the context of the video.