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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.
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