FFmpeg is a complete solution to record, convert and stream audio and video. It includes libavcodec, the leading audio/video codec library. You can enable a lot of optional (not-autodetected) features by passing variables to the script (VAR=yes/no ./ffmpeg.SlackBuild): ASS=yes|no (default: no), requires libass BLURAY=yes|no (default: no), requires libbluray CELT=yes|no (default: no), requires celt DC1394=yes|no (default: no), requires libdc1394 DECKLINK=yes|no (default: no), requires decklink-sdk FAAC=yes|no (default: no), requires faac (creates non-redistributable binary) FDK_AAC=yes|no (default: no), requires libfdk-aac (creates non-redistributable binary) FLITE=yes|no (default: no), requires flite FREI0R=yes|no (default: no), requires frei0r GSM=yes|no (default: no), requires gsm IEC61883=yes|no (default: no), requires libiec61883 and libavc1394 ILBC=yes|no (default: no), requires libilbc JP2=yes|no (default: no), requires openjpeg LADSPA=yes|no (default: no), requires ladspa_sdk LAME=yes|no (default: no), requires lame MODPLUG=yes|no (default: no), requires libmodplug OPENAL=yes|no (default: no), requires OpenAL OPENCORE=yes|no (default: no), requires opencore-amr OPENCV=yes|no (default: no), requires opencv OPENSSL=yes|no (default: no), creates non-redistributable binary OPUS=yes|no (default: no), requires opus PULSEAUDIO=yes|no (default: no), requires pulseaudio QUVI=yes|no (default: no), requires libquvi RTMP=yes|no (default: no), requires rtmpdump SCHROEDINGER=yes|no (default: no), requires schroedinger SPEEX=yes|no (default: no), requires speex TWOLAME=yes|no (default: no), requires twolame VIDSTAB=yes|no (default: no), requires vid.stab VPX=yes|no (default: no), requires libvpx X264=yes|no (default: no), requires x264 X265=yes|no (default: no), requires x265 XVID=yes|no (default: no), requires xvidcore ZVBI=yes|no (default: no), requires zvbi Additional optional (autodetected) dependencies are jack-audio-connection-kit, libva and libvdpau. Make sure to run this script in a real root shell ("su -") and that you have either tetex or texlive installed. All of the mentioned requirements are available from SlackBuilds.org