Once the video is finally downloaded, it'll display common stuff like the name of the file. If it is a rental, like this one, an expiration date will appear underneath the name -- giving the exact date and time when it will expire.
Opening the information tab will give you more detailed information such as the start/expiration dates and times, as well as a countdown to how much time you have left. It's a good reminder to help you check as you only have 24 hours for a rental once you begin watching. 14 days if unwatched.