"This portion of the video is not allocated with any slide"???

The video that I imported to my slide is getting cut off at the end. When I open the Video Management window, I see the message, "This portion of the video is not allocated with any slide" when I scrub to the portion of the video that is getting cut off after publishing. Here's a screenshot of what I mean:

https://www.screencast.com/t/zOFNNwen4T

Any idea why the video is getting the last few seconds cut off?