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-ffmpeg4 (Software to record, convert and stream audio and video).
-
-ffmpeg4 should be installable alongside ffmpeg 3.x without conflict.
-
-FFmpeg is a complete solution to record, convert and stream audio
-and video. It includes libavcodec, the leading audio/video codec
-library.
-
-By default it will not build the ffmpeg binaries or man-pages, in order
-not to conflict with an ffmpeg 3.x package. You can change this by
-using the following environment variable setting:
-
- BINS=yes
-
-It can optionally link to a number of extra libraries that are available
-on SBo by setting the relevant env vars, which all default to "no":
-
- CHROMAPRINT=yes # requires chromaprint
- DECKLINK=yes # requires decklink-sdk
- FREI0R=yes # requires frei0r
- LADSPA=yes # requires ladspa_sdk
- LIBAOM=yes # requires libaom
- LIBBLURAY=yes # requires libbluray
- LIBBS2B=yes # requires libbs2b
- LIBCELT=yes # requires celt
- LIBDC1394=yes # requires libdc1394
- LIBFDK_AAC=yes # requires libfdk-aac (non-redistributable)
- LIBFLITE=yes # requires flite
- LIBGME=yes # requires libgme
- LIBGSM=yes # requires gsm
- LIBIEC61883=yes # requires libiec61883 and libavc1394
- LIBILBC=yes # requires libilbc
- LIBMODPLUG=yes # requires libmodplug
- LIBMP3LAME=yes # requires lame
- LIBOPENCORE=yes # requires opencore-amr
- LIBOPENCV=yes # requires opencv
- LIBOPUS=yes # requires opus
- LIBRTMP=yes # requires rtmpdump
- LIBRUBBERBAND=yes # requires rubberband
- LIBSNAPPY=yes # requires snappy
- LIBSPEEX=yes # requires speex
- LIBTESSERACT=yes # requires tesseract
- LIBTWOLAME=yes # requires twolame
- LIBVIDSTAB=yes # requires vid.stab
- LIBWEBP=yes # requires libwebp
- LIBX264=yes # requires x264
- LIBX265=yes # requires x265
- LIBXVID=yes # requires xvidcore
- LIBZMQ=yes # requires zeromq
- LIBZVBI=yes # requires zvbi
-
-By default, ffmpeg4 is built to link with openssl. This creates a non-
-redistributable binary (just like linking with libfdk-aac does). If you
-want a redistributable binary you can change from linking with openssl
-to linking with gnutls instead by setting:
-
- OPENSSL=no
- GNUTLS=yes
-
-Both of these libraries are available in Slackware itself.
-
-There are a few other libraries available in Slackware that are also
-linked to by default, and you can disable them by changing the default
-of "yes" to "no" with the following settings:
-
- LIBCACA=no
- LIBCDIO=no
- LIBFONTCONFIG=no
- LIBFREETYPE=no
- LIBFRIBIDI=no
- LIBOPENJPEG=no
- LIBPULSE=no
- LIBSMBCLIENT=no
- LIBSSH=no
- LIBTHEORA=no
- LIBV4L2=no
- LIBVORBIS=no
- LIBVPX=no
- LIBWAVPACK=no
- OPENGL=no
-
-To link to this version of the ffmpeg libraries, you'll need to set
-the PKG_CONFIG_PATH to "/usr/lib${LIBDIRSUFFIX}/ffmpeg4/pkgconfig"
-where ${LIBDIRSUFFIX} is either 64 or an empty string, depending on
-your architecture.