Video in Storyline won't stop at the end in timeline

On one of my slides, I inserted a video with text and audio overlaying it.  The video is really just something to engage the learner - the text and audio is the meat.  Therefore, at the end of my audio, I want the video to stop.  On the timeline, I moved the End mark where I want the video to stop playing.  When I push the play button (under the timeline/states/notes), it functions like I want.  However, when I preview the slide or project, the video keeps playing and doesn't stop until it's completed even though in the timeline it shows that it should stop much earlier.

I know that I can trim the video, but this is tedious compared to doing this in the timeline.  Is there something that I'm missing?  Do I really have to edit and trim the video manually?  I have multiple slides like this so I was hoping this would be easier.