My actual video is about one minute in length.  Originally it was longer, multiple videos which I cut down to one minute. 

But the time ruler at the top continues on to 2 or 3 minutes even though that's empty space, no titles, no transitions, no visuals, no audio. 

When I export the video, it includes that blank space as a black visual with no sound. 

I want the video to end when the visual does, at 1:00, how do I do that?

I've tried using delete scene end, cutting the very last few seconds of the scene and hitting delete....