In this lesson, Kevin P McAuliffe talks about a great feature added in version 8.6 of Media Composer, and that’s Mask Margins. Working in timelines with clips that have different letter boxing can become frustrating when you’re attempting to adjust them to give them one, consistent letterbox. Working with Mask Margins removes that frustration from the equation, and also gives you the ability to easily export your timelines with your new Mask Margins cropping your timelines, so they look consistent every time.