Apply Mask on Video in Premier Pro

sourcefile from: http://www.dvinfo.net/forum/attend-world-premiere/75619-make-title-mask-premiere-pro.html

1. Place the video on Video 1
2.Place the Title on Video 2
3. Go to the Effects Window and find the Track Matte Key. (Video Effects > Keying)
4. Apply the Track Matte Key to the video on Video 1
5. Go to your Effect Controls Window
6. Change the Matte from None to Video 2 for the Track Matte Key
7. Turn off the visibility for Video 2

Now the video should be visible throught the text only and the area around the text should be pure black. :)