Avisynth is a powerful open source video processing and editing application. It is designed to help users create high-quality videos from a wide range of sources, such as digital video, DVD, VHS, and live broadcasts. It allows users to apply various effects, filters and transitions to their videos, as well as to combine multiple video clips into a single movie. Avisynth also provides tools for color correction, audio improvement, and video stabilization. It is a popular choice among professional video editors, and is widely used in video production and post-production.
Discontinued The program is no longer available. The latest version, 2.0e, released in 2012, can still be downloaded from the official website.