Avidemux is a free video editor designed for simple cutting, filtering and
encoding tasks. It supports many file types, including AVI, DVD compatible
MPEG files, MP4 and ASF, using a variety of codecs. Tasks can be automated
using projects, job queue and powerful scripting capabilities.
Requirements (all available at SlackBuilds.org):
lame, faad2, faac, a52dec, libdca, xvidcore, and x264
Optional Dependencies (also available at SlackBuilds.org):
aften, amrnb, jack-audio-connection-kit, libsamplerate