My Videos not showing in Video App

[pstork]

Anyone know what makes videos you place in your My Videos directory show up in the My Videos pane of the Video app? I've added 4 MP4 videos to the directory. When I added the first one last night it automatically showed up after a few minutes. But the last three don't show. I can open them manually from the desktop and they open in the Video app, but they don't show in the listing in the app itself.