GStreamer Bad Plug-ins is a set of plug-ins that aren't up to par compared to the rest. They might be close to being good quality, but they're missing something - be it a good code review, some documentation, a set of tests, a real live maintainer, or some actual wide use. This optionally depends on TiMidity++, amrnb, amrwb, celt, faac, faad2 flite, gsm, libass, libcdaudio, libdc1394, libdca, libfdk-aac, libkate, liblrdf, libmimic, libmodplug, libmusicbrainz, libofa, libquicktime, lv2, musepack-tools, opencv, rtmpdump, schroedinger, soundtouch, swfdec nvidia*driver, and xvidcore. Note that if you have any version of the nvidia drivers installed the script will autodetect them and will try to build its nvdec support, requiring the presence on the system of cudatoolkit too: as cudatoolkit is *huge*, cuda support is disabled by default but it can be explicitly enabled passing the script the variable CUDA=yes