Do you use Sony Vegas pro and don't know how to delete only video or only audio then check out this awesome tutorial on how to remove only audio or only video in Sony Vegas pro 13.

Click here to watch video.

Alternate method :

If you don't have time to watch video read the instructions given below

1. Click on your audio or video in time line area.

1. Press "u" on your keyboard.

1. Now your video and audio divides.

1. Now , right-click the thing which you want to delete and then click "Delete".