How can I stream video stored on one MacBook Pro to another?
If the video is already recorded, you could just share the video folder with the other Mac. If you connect to the 17-inch MBP from your 13-inch and log in as the 17-inch MBP user, you can have access to all the users files. You can open the videos on the 13-inch MBP and play them in e.g. VLC player. Or you could share one folder only and set it to read only.