Sams Teach Yourself Premiere 6.5 in 24 Hours

Alpha channels and mattes round out Premiere's compositing tools. Graphics frequently have alpha channels built in. Premiere "switches on" those alpha channels, creating distinct, easy-to-use transparencies . Mattes come in several styles. The most common is a simple black-and-white graphic. When applied to a clip it makes portions transparent and other areas opaque .