Today's file systems are optimized for storing text files. To enable these file systems to support video data, we have developed techniques for efficient placement, retrieval, fault-tolerance, and caching of video data in file systems. These results have been instantiated in Symphony, a file system that exports multiple service classes (e.g., best-effort, real-time) and supports the coexistence of data type and application specific policies for placement, retrieval, fault tolerance, and caching. This research builds upon a large body of literature as well as our prior research on designing video storage servers.