Check out this tutorial of how to create moving curtains in After Effects. You create a set of curtains that opens up to reveal footage placed behind it. You can render the clip out with an alpha channel and always have a curtains clip ready to reveal some footage. Whether you're new to Adobe's popular motion graphics and compositing software or a seasoned video professional just looking to better acquaint yourself with the program and its various features and filters, you're sure to be well served by this video tutorial. For more information, including detailed, step-by-step instructions, watch this free video guide.