AVISynth UI is a user interface for the script based video editor AVISynth. Written in VisualBasic, It enables you to edit videos using AVISynth with the comfort and ease of use of having a user interface.
A graphical editor for Windows Media (.wmv), MPEG files and FLV movies. Select or delete multiple portions from a video file. The system lets you copy, paste and fine tune the selections. Also supports joining and splitting of video/movie files.