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wm4 386e8cd16d player: change 3 remaining GPL-only code pieces to LGPL 
There has been no new developments or agreements, but I was uncertain
about the copyright status of them. Thus this part of code was marked as
being potentially GPL, and was not built in LGPL mode. Now I've taken a
close look again, and decided that these can be relicensed using the
existing relicensing agreements.

OSD level 3 was introduced in commit 8d190244, with the author being
unreachable. As I decided in commit 6ddd95fd, OSD level 3 itself can
be kept, but the "osd" command had to go, and the "rendering" of OSD
level 3 (the HAVE_GPL code in osd.c) was uncertain. But the code for
this was rewritten: instead of duplicating the time/percent formatting
code, it was changed to use common code, and some weird extra logic was
removed. The code inside of the "if" is exactly the same as the code
that formats the OSD status line (covered by LGPL relicensing).

The current commands for adding/removing sub/audio tracks more or less
originated from commit 2f376d1b39, with the author being unreachable.
But the original code was very different, mostly due to MPlayer's
incredibly messy handling of subtitles in general. Nothing of this
remains in the current code. Even the command declarations were
rewritten. The commands (as seen from the user side) are rather similar
in naming and semantics, but we don't consider this copyrightable. So it
doesn't look like anything copyrightable is left.

The add/cycle commands were more or less based on step_property,
introduced in commit 7a71da01d6, with the patch author disagreeing with
the LGPL relicensing. But all code original to the patch has been
replaced in later mpv changes, and the original code was mostly copied
from MP_CMD_SET_PROPERTY anyway. The underlying property interface was
completely changed, the error handling was redone, and all of this is
very similar to the changes that were done on SET_PROPERTY. The command
declarations are completely different in the first place, because the
semantic change from step to add/cycle. The commit also seems to have
been co-authored by reimar to some degree. He also had the idea to
change the original patch from making the command modify a specific
property to making it generic.

(The error message line, especially with its %g formatting, might
contain some level of originality, so change that just to be sure.
This commit Copies and adapts the error message for SET_PROPERTY.)

Although I'm a bit on the fence with all the above things, it really
doesn't look like there's anything substantial that would cause issues.
I thus claim that there is no problem with changing the license to LGPL
for the above things. It's probably still slightly below the standard
that was usually applied in the code relicensing in mpv, but probably
still far above to the usual in open source relicensing (and above
commercial standards as well, if you look what certain tech giants do).
2017-11-24 14:12:10 +01:00
.github github: Google Drive sucks 2017-10-19 18:45:05 +02:00
audio ao_alsa: change license to LGPL 2017-11-23 16:43:59 +01:00
common build: make it easier to force FFmpeg upstream 2017-11-01 16:50:18 +01:00
demux player: minor fix/simplification of OSD time/duration handling 2017-11-24 13:58:57 +01:00
DOCS manpage: clarify bitstreaming options 2017-11-19 11:34:10 -08:00
etc osc: make cycling visibility an input.conf key binding 2017-11-03 14:41:18 +01:00
input player: change 3 remaining GPL-only code pieces to LGPL 2017-11-24 14:12:10 +01:00
libmpv client API: minor bump + change entry for DRM related opengl-cb changes 2017-10-23 21:11:44 +02:00
misc m_option: pretty print mpv_node for OSD 2017-10-30 15:32:24 +01:00
options vo_gpu: hwdec_d3d11va: allow zero-copy video decoding 2017-11-07 20:27:13 +11:00
osdep win32: fix semantics of POSIX 2008 locale stubs 2017-11-19 21:10:56 +11:00
player player: change 3 remaining GPL-only code pieces to LGPL 2017-11-24 14:12:10 +01:00
stream stream_libarchive, osdep: use stubs for POSIX 2008 locale on MinGW 2017-11-12 16:43:34 +01:00
sub osd: don't skip leading whitespace on the first line either 2017-11-02 16:46:09 +01:00
ta Fix use of ISC license 2017-04-15 16:20:00 +02:00
test tests: fix include after 6597998 2017-10-17 09:29:02 +02:00
TOOLS appveyor: use git submodule update --init 2017-11-13 23:19:03 +11:00
video vo_gpu: d3d11: don't use runtime version for UAV slot count 2017-11-19 21:49:27 +11:00
waftools win32: add more-POSIXy versions of open() and fstat() 2017-10-25 22:37:20 +11:00
.gitignore player: move builtin profiles to a separate file 2016-09-15 14:50:38 +02:00
.travis.yml travis: correctly remove ffmpeg-stable from build matrix 2017-10-27 18:23:39 +02:00
appveyor.yml appveyor: update ffmpeg and test d3d11/vulkan 2017-11-08 07:22:54 +11:00
bootstrap.py build: update waf 2017-02-17 18:54:21 +01:00
Copyright player: change 3 remaining GPL-only code pieces to LGPL 2017-11-24 14:12:10 +01:00
LICENSE.GPL Copyright: some more licensing clarifications 2017-10-13 15:44:55 +02:00
LICENSE.LGPL Copyright: some more licensing clarifications 2017-10-13 15:44:55 +02:00
mpv_talloc.h
README.md build: make it easier to force FFmpeg upstream 2017-11-01 16:50:18 +01:00
RELEASE_NOTES RELEASE_NOTES: remove old releases 2017-09-18 22:49:20 +02:00
VERSION Update VERSION 2017-09-13 03:42:28 +02:00
version.sh version.sh: append -dirty if the working tree contains modifications 2017-06-16 17:20:44 +02:00
wscript ao_alsa: change license to LGPL 2017-11-23 16:43:59 +01:00
wscript_build.py vo_gpu: d3d11: initial implementation 2017-11-07 20:27:13 +11:00

README.md

http://mpv.io/

mpv

Overview

mpv is a media player based on MPlayer and mplayer2. It supports a wide variety of video file formats, audio and video codecs, and subtitle types.

Releases can be found on the release list.

System requirements

  • A not too ancient Linux, or Windows 7 or later, or OSX 10.8 or later.
  • A somewhat capable CPU. Hardware decoding might sometimes help if the CPU is too slow to decode video realtime, but must be explicitly enabled with the --hwdec option.
  • A not too crappy GPU. mpv is not intended to be used with bad GPUs. There are many caveats with drivers or system compositors causing tearing, stutter, etc. On Windows, you might want to make sure the graphics drivers are current. In some cases, ancient fallback video output methods can help (such as --vo=xv on Linux), but this use is not recommended or supported.

Downloads

For semi-official builds and third-party packages please see mpv.io.

Changelog

There is no complete changelog; however, changes to the player core interface are listed in the interface changelog.

Changes to the C API are documented in the client API changelog.

The release list has a summary of most of the important changes on every release.

Changes to the default key bindings are indicated in restore-old-bindings.conf.

Compilation

Compiling with full features requires development files for several external libraries. Below is a list of some important requirements.

The mpv build system uses waf, but we don't store it in your source tree. The script './bootstrap.py' will download the latest version of waf that was tested with the build system.

For a list of the available build options use ./waf configure --help. If you think you have support for some feature installed but configure fails to detect it, the file build/config.log may contain information about the reasons for the failure.

NOTE: To avoid cluttering the output with unreadable spam, --help only shows one of the two switches for each option. If the option is autodetected by default, the --disable-*** switch is printed; if the option is disabled by default, the --enable-*** switch is printed. Either way, you can use --enable-*** or --disable-** regardless of what is printed by --help.

To build the software you can use ./waf build: the result of the compilation will be located in build/mpv. You can use ./waf install to install mpv to the prefix after it is compiled.

Example:

./bootstrap.py
./waf configure
./waf
./waf install

Essential dependencies (incomplete list):

  • gcc or clang
  • X development headers (xlib, xrandr, xext, xscrnsaver, xinerama, libvdpau, libGL, GLX, EGL, xv, ...)
  • Audio output development headers (libasound/ALSA, pulseaudio)
  • FFmpeg libraries (libavutil libavcodec libavformat libswscale libavfilter and either libswresample or libavresample) from ffmpeg-mpv or Libav
  • zlib
  • iconv (normally provided by the system libc)
  • libass (OSD, OSC, text subtitles)
  • Lua (optional, required for the OSC pseudo-GUI and youtube-dl integration)
  • libjpeg (optional, used for screenshots only)
  • uchardet (optional, for subtitle charset detection)
  • vdpau and vaapi libraries for hardware decoding on Linux (optional)

Libass dependencies:

  • gcc or clang, yasm on x86 and x86_64
  • fribidi, freetype, fontconfig development headers (for libass)
  • harfbuzz (optional, required for correct rendering of combining characters, particularly for correct rendering of non-English text on OSX, and Arabic/Indic scripts on any platform)

FFmpeg dependencies:

  • gcc or clang, yasm on x86 and x86_64
  • OpenSSL or GnuTLS (have to be explicitly enabled when compiling FFmpeg)
  • libx264/libmp3lame/libfdk-aac if you want to use encoding (have to be explicitly enabled when compiling FFmpeg)
  • Libav also works, but some features will not work. (See section below.)

Most of the above libraries are available in suitable versions on normal Linux distributions. However, FFmpeg is an exception - ffmpeg-mpv or Libav git master is required. For that reason you may want to use the separately available build wrapper (mpv-build) that first compiles FFmpeg libraries and libass, and then compiles the player statically linked against those.

If you want to build a Windows binary, you either have to use MSYS2 and MinGW, or cross-compile from Linux with MinGW. See Windows compilation.

FFmpeg vs. Libav

Generally, mpv should work with the latest release as well as the git version of both FFmpeg and Libav. But FFmpeg is preferred, and some mpv features work with FFmpeg only (subtitle formats in particular).

Preferred FFmpeg version

Only ffmpeg-mpv is supported. Upstream FFmpeg can be forced by passing a certain switch to configure, but compilation or runtime behavior might be broken at times.

If you force upstream FFmpeg, and it doesn't work, please contact upstream FFmpeg for help, instead of mpv. See [FFmpeg contact][http://ffmpeg.org/contact.html#MailingLists] how to contact FFmpeg upstream.

FFmpeg ABI compatibility

mpv does not support linking against FFmpeg versions it was not built with, even if the linked version is supposedly ABI-compatible with the version it was compiled against. Expect malfunctions, crashes, and security issues if you do it anyway.

The reason for not supporting this is because it creates far too much complexity with little to no benefit, coupled with absurd and unusable FFmpeg API artifacts.

Newer mpv versions will refuse to start if runtime and compile time FFmpeg library versions mismatch.

Release cycle

Every other month, an arbitrary git snapshot is made, and is assigned a 0.X.0 version number. No further maintenance is done.

The goal of releases is to make Linux distributions happy. Linux distributions are also expected to apply their own patches in case of bugs and security issues.

Releases other than the latest release are unsupported and unmaintained.

See the release policy document for more information.

Bug reports

Please use the issue tracker provided by GitHub to send us bug reports or feature requests. Follow the template's instructions or the issue will likely be ignored or closed as invalid.

Using the bug tracker as place for simple questions is fine but IRC is recommended (see Contact below).

Contributing

Please read contribute.md.

For small changes you can just send us pull requests through GitHub. For bigger changes come and talk to us on IRC before you start working on them. It will make code review easier for both parties later on.

You can check the wiki or the issue tracker for ideas on what you could contribute with.

Relation to MPlayer and mplayer2

mpv is a fork of MPlayer. Much has changed, and in general, mpv should be considered a completely new program, rather than a MPlayer drop-in replacement.

For details see FAQ entry.

If you are wondering what's different from mplayer2 and MPlayer, an incomplete and largely unmaintained list of changes is located here.

License

GPLv2 "or later" by default, LGPLv2.1 "or later" with --enable-lgpl. See details.

Contact

Most activity happens on the IRC channel and the github issue tracker.

  • GitHub issue tracker: issue tracker (report bugs here)
  • User IRC Channel: #mpv on irc.freenode.net
  • Developer IRC Channel: #mpv-devel on irc.freenode.net

To contact the mpv team in private write to mpv-team@googlegroups.com. Use only if discretion is required.