K9Copy is an open source DVD backup and authoring program for Unix-like operating systems. K9Copy can fit the contents of a dual layer DVD-9 onto a single layer DVD-5 and allows a user to explicitly retain or discard any content from the original disc (such as video titles, audio tracks, subtitles and the DVD menu). All content selected for backup is compressed to a configurable target size and saved as an ISO image file or a DVD VIDEO_TS folder. K9Copy includes basic DVD authoring capabilities.
