Cinelerra is the most advanced non-linear video editor and compositor for Linux. It does primarily 3 main things: capturing, compositing, and editing audio and video with sample level accuracy. This is a development version maintained by Einar Rünkaru: http://git.cinelerra.org/gitweb?p=einar/cinelerra.git;a=summary This build script uses a git snapshot that was downloaded and hosted by the script maintainer. By default cinelerra builds with an internal ffmpeg. Building with an external, system-wide installed ffmpeg is possible by passing EXTERNALFFMPEG=yes to the SlackBuild. However, this requires ffmpeg < 0.6.x, which is no longer available on SlackBuilds.org. Cinelerra requires a52dec, libsndfile, imlib2, libdv, faac, faad2 x264, lame, libavc1394, libiec61883, and mjpegtools.