How do I show a link once a file is uploaded

[Ayton]

I had trouble finding an answer for this problem. I would like to display a link to a page that has a video file on it but I don't want the link to appear until after the video file is uploaded. It's a site where users upload videos so I don't want to have to manually put the links there for them after they upload their videos, nor do I want to make the links ahead of time since users will click them and there will be no video available.So, is there a way to keep a link hidden until a file is uploaded. Once the file is uploaded the php page where the link will be on checks to see if it exists and then if it does the link is shown, otherwise the link stays hidden.