AviSynth is a great open source non-linear video editor. Besides much documentation, and some internal filters, I created several AviSynth plugins. They are listed below:
ColorLooks : This plugin is based on Trev's VDub filter Colorlooks and Donald Graft's Colorize (well it works a bit similar). I also added some new stuff. The plugin contains the following filters: Technicolor, Colorize, Sepia and Posterize. [ discussion ].
ColorMatrix: ColorMatrix corrects the colors of mpeg2 streams. More correctly, sometimes mpeg2 streams are encoded using a different set of color conversion coefficients as used by AviSynth's color conversion routines or by the standard renderers, with the result that DivX/XviD clips or mpeg2 clips encoded by TMPGEnc/CCE using AviSynth or VirtualDub are displayed with slighty off colors (which looks like a small difference in brightness). The plugin is updated by xx and the latest version can be downloaded