mirror of https://github.com/mpv-player/mpv
79 lines
4.0 KiB
Plaintext
79 lines
4.0 KiB
Plaintext
mpv is a fork of mplayer2, which is a fork of MPlayer.
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mpv as a whole is licensed under the GNU General Public License GPL version 2
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or later (called GPLv2+ in this document, see LICENSE.GPL for full license
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text) by default. The mpv program is licensed the GNU Lesser General Public
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License LGPL version 2 or later (LGPLv2.1+ in this document, see LICENSE.LGPL
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for full license text) if built without using any GPL only files.
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The -Dgpl=false configure switch is provided as a convenience for excluding
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the GPL only files listed below from the build process.
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However, do note that the build system is provided "as is" and using the
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-Dgpl=false configure switch does not in itself create a LGPLv2.1+ license
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grant.
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Additionally, some non-program parts, such as the documentation and some config
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files listed below, are still built and licensed under their respective licenses
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even when -Dgpl=false is used. Please consult GPLv2+ and LGPLv2.1+ license texts
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for further details on how to distribute these files.
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Most source files are LGPLv2.1+ or GPLv2+, but some files are available under
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more liberal licenses, such as BSD, MIT, ISC, and possibly others. Look at the
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copyright header of each source file, and grep the sources for "Copyright" if
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you need to know details. C source files without Copyright notice are usually
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licensed as LGPLv2.1+. Also see the list of files with specific licenses below
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(not all files can have a standard license header).
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All new contributions must be LGPLv2.1+ licensed. Using a more liberal license
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compatible to LGPLv2.1+ is also ok.
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Changes done to GPL code must come with the implicit/explicit agreement that the
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project can relicense the changes to LGPLv2.1+ at a later point without asking
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the contributor. This is a safeguard for making potential relicensing of
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remaining GPL code to LGPLv2.1+ easier.
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See DOCS/contribute.md for binding rules wrt. licensing for contributions.
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For information about authors and contributors, consult the git log, which
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contains the complete SVN and CVS history as well.
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mpv can be built as LGPLv2.1+ without using any GPL only files. To add a
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LGPL mode to mpv, MPlayer code had to be relicensed from GPLv2+ to LGPLv2.1+ by
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asking the MPlayer authors for permission. Since permission could not be
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obtained from everyone, LGPL mode disables the following features, some of them
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quite central:
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- Linux X11 video output
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- BSD audio output via OSS
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- NVIDIA/Linux hardware decoding (vdpau, although nvdec usually works)
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- minor features: jack, DVD, CDDA, DVB, CACA, legacy direct3d VO
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Some of these will be fixed in the future. The intended use for LGPL mode is
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with libmpv, and currently it's not recommended to build mpv CLI in LGPL mode
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at all.
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The following files are still GPL only (-Dgpl=false disables them):
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audio/out/ao_jack.c will stay GPL
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audio/out/ao_oss.c will stay GPL
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stream/dvb* must stay GPL
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stream/stream_cdda.c unknown
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stream/stream_dvb.* must stay GPL
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stream/stream_dvdnav.c unknown
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video/out/vo_caca.c unknown
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video/out/vo_direct3d.c unknown
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video/out/vo_vaapi.c probably impossible (some company's code)
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video/out/vo_vdpau.c probably impossible (nVidia's code)
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video/out/vo_x11.c probably impossible
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video/out/vo_xv.c probably impossible
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video/out/x11_common.* probably impossible
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video/vdpau.c hard (GPL-only parts must be ifdefed)
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video/vdpau.h unknown
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video/vdpau_mixer.* actual code must be rewritten
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DOCS/man/ GPLv2+
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etc/mplayer-input.conf unknown license, probably GPLv2+
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etc/mpv.desktop unknown license, probably GPLv2+
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etc/restore-old-bindings.conf unknown license, probably GPLv2+
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None of the cases listed above affect the final binary if it's built as
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LGPL. Linked libraries still can affect the final license (for example if
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FFmpeg was built as GPL).
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