SlackBuilds-git/multimedia/mpv

mpv is a movie player based on MPlayer and mplayer2. It shares some
features with the former projects while introducing many more. It
supports a wide variety of video file formats, audio and video codecs,
and subtitle types.

optional: docutils, lua, libass, libbluray, enca, libplacebo,
libuchardet, rubberband, jack-audio-connection-kit, OpenAL,
oss, shaderc, wayland

If docutils is not installed, the man pages will not be built. This is
the reason docutils is included in both the 'required' and 'optional'
lists. If you don't concider the man pages required, then the docutils
package is optional. Building the man pages is recommended.

Dependencies are autodetected. Some optional dependencies are disabled
by default and may be enabled (see BUILD_OPTS). Optional dependencies
that are enabled by default may be disabled (see BUILD_OPTS).

BUILD_OPTS:
To override the default for build options, set the shell variable
BUILD_OPTS prior to or at build time.

# BUILD_OPTS='--disable-cdda --enable-openal' ./mpv.SlackBuild

or, if you use fakeroot to build packages:

$ fakeroot env BUILD_OPTS='--disable-cdda --enable-openal' ./mpv.SlackBuild

The following list is meant as a note to myself of build options or
optional dependencies currently unavailable via full Slackware
installation and from SBo:

libiconv, vapoursynth, libguess, rsound, sndio