open source video editing softwares

• Avidemux : Avidemux is a free open-source program designed for multi-purpose video editing and processing. It is written in C/C++, using either the GTK+ or Qt graphics toolkit or a command line interface, and is a platform independent, universal video processing program.
• Avisynth : AviSynth is a frameserver program for Microsoft Windows developed by Ben Rudiak-Gould, Edwin van Eggelen, Klaus Post, Richard Berg, Ian Brabham and others. It is free software under GNU GPL license.AviSynth acts as a non-linear video editor (without a GUI) controlled entirely by scripting. It stands as an intermediary between a digital video source, like an AVI or MPEG, and a VFW receiving program, which is typically a media player, video editing software, or an encoder.
• Blender : Blender is a free 3D graphics application. It can be used for modeling, UV unwrapping, texturing, rigging, water simulations, skinning, animating, rendering, particle and other simulations, non-linear editing, compositing, and creating interactive 3D applications.
• Cinelerra : Cinelerra is non-linear video editing system. It is designed for the GNU/Linux operating system, but has also been successfully ported to Mac OS X. No support is provided for any version of Microsoft Windows. It is produced by Heroine Virtual, and is free software distributed under the GNU General Public License. Cinelerra also includes a video compositing engine, allowing the user to perform common compositing operations such as keying and mattes.
• DVDx : DVDx is a free video encoding application that allows the user to convert a DVD-Video to VCD 2.0 or SVCD 1.0 or AVI or Windows Media (WMV) in one step (including multiplexing, splitting). It produces relatively good quality movies in AVI/MPEG/MPEG2/WMV9 format. DVDx has been designed especially for inexperienced users.
• Jahshaka : Jahshaka aims to become a cross-platform, open source, free, video editing, effects, and compositing suite. It is currently in alpha stage, supporting realtime effects rendering, but lacking useful implementations of many features such as the non-linear editing system. It is written using Trolltech's Qt, but its user interface is written using an OpenGL library to create GUIs.
• Kaltura : Kaltura is a software company based in New York which was founded in 2006. Its development team is based in Israel.Kaltura's technology allows users to interact and collaborate in rich-media, for example, their video platform supports group-video making and peer production of rich-media. The main components of Kaltura's online video platform are based on open-source software, enabling any site to add advanced video and rich-media capabilities, and share content across the Kaltura Network of remixable content based on creative commons licensing.
• Kino : Kino is a GTK+-based non-linear digital video editor. It distributed as free software. Its vision is: "Easy and reliable DV editing for the Linux desktop with export to many usable formats." The program supports many basic video editing and assembling tasks.
• Kdenlive : Kdenlive (KDE Non-Linear Video Editor) is a non-linear video editor based on the MLT framework that focuses on flexibility and ease of use. The project was initially started by Jason Wood in 2002, and is now maintained by a small team of developers.Kdenlive supports all of the formats supported by FFmpeg (such as QuickTime, AVI, WMV, MPEG, and Flash Video), and also supports 4:3 and 16:9 aspect ratios for both PAL, NTSC and various HD standards, including HDV. Video can also be exported to DV devices, or written to a DVD with chapters and a simple menu.
• Lives : LiVES (LiVES is a Video Editing System) is a free software video editing program and VJ tool, released under GNU General Public License. There are binary versions available for most popular Linux distributions (including Ubuntu, Gentoo, Debian, Fedora Core, Suse, Slackware and Mandriva). There are also versions for BSD, and it will run under Mac OS X/Darwin and IRIX.
• Pitivi : PiTiVi is a program for video editing based on the GStreamer framework. It is free software under the terms of the GNU General Public License. PiTiVi can:Capture and encode audio and video with formats supported by GStreamer, Split and trim video clips,
  Trim and enhance audio, Render projects in any format supported by the GStreamer framework.
• VirtualDub : VirtualDub is a video capture and video processing utility for Microsoft Windows written by Avery Lee.It is designed to process linear video streams, including filtering and recompression, but lacks features common to dedicated video editing software.Released under the terms of the GNU General Public License, VirtualDub is free software.
• VirtuaDubMod : VirtualDubMod is an open source video capture and linear processing tool for Microsoft Windows. It is based on Avery Lee's VirtualDub, and is licensed under the GPL. VirtualDubMod is hosted on SourceForge and is at version 1.5.10.2 (released 29 Augus 2005). Version 1.5.10.2 build 2542 was released on 21 February 2006. The development of the tool seems to have been abandoned. A version labeled as "VirtualDubMod 1.6.0.0 SURROUND", dated 9 April 2006, was released by a company called Aud-X.