If you do want to show the entire video, you can create clips of the video to view.
1). From the video's landing page, click on Share and copy the URL.
2). Go to https://www.youtubetrimmer.com/ and paste in the URL to the video.
3). The video appears on the screen. At the bottom of the video is a ruler. Slide the ruler to where you want to start and end the video.
4. Copy the URL or embed code and insert into Blackboard.
Watch this short video for a demonstration.