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wm4 642e963c86 dec_video: change license to LGPL (almost) 
"Almost" because this might contain copyright by michael, who agreed
with LGPL, but only once the core is LGPL. This is preparation for that
to happen.

Apart from that, the usual remarks apply. In particular, dec_video.c
started out quite chaotic with no modularization, but was later
basically gutted, and in general rewritten a bunch of times. Not going
to give a history lesson.

Special attention needs to be given to 3 patches by cehosos, who did not
agree to the relicensing:

240b743ebdf: --field-dominance
e32cbbf7dc3: reinit VO if aspect ratio changes
306f6243fdf: use container aspect if codec aspect unset (?)

The first patch is pretty clearly still in the current code, and needs
to be disabled for LGPL.

The functionality of the second patch is still active, but implemented
completely different, and as part of general frame parameter changes (at
the time of the patch, MPlayer already reinitialized the VO on frame
size and pixel format changes - all this was merged into a single check
for changing image parameters).

The third patch makes me a bit more uncomfortable. It appears the code
was moved to dec_video.c in de68b8f23c, and further changed in
82f0d373, 0a0bb905, and bf13bd0d. You could claim that cehoyos'
copyright still sticks. Fortunately, we implement alternative aspect
detection, which is simpler and probably preferable, and which arguably
contains none of the original code and logic, and thus should be fully
safe.

While I don't know if cehoyos' copyright actually still applies, I'm
more comfortable with making the code GPL-only for now. Also change the
default to use the (in future) plain LGPL code, and deprecate the one
associated with the GPL code, so we can eventually remove the GPL code.

But it's also possible we decide that the copyright doesn't apply, and
undo the deprecation and GPL guards.

I expect that users won't notice anything. If you ask me, the old aspect
method was probably an accidental bug instead of intentional behavior.

Although, the new aspect method was broken too, so I had to fix it.
 		2017-06-18 18:58:36 +02:00
.github github: also add a link to the list of latest releases 2017-05-05 12:37:34 +02:00
DOCS dec_video: change license to LGPL (almost) 2017-06-18 18:58:36 +02:00
TOOLS vf_dlopen: remove this filter 2017-06-18 13:55:40 +02:00
audio dec_audio, ad_lavc: change license to LGPL 2017-06-14 21:08:59 +02:00
common encode_lavc: move from GPL 2+ to LGPL 2.1+. 2017-06-13 14:22:15 -04:00
demux Drop/move img_fourcc.h 2017-06-18 15:13:45 +02:00
etc options: fix some missing --sub-ass-style-override renames 2017-06-07 20:18:25 +02:00
input ipc-unix: don’t truncate the message on EAGAIN 2017-05-24 21:55:22 +02:00
libmpv client API: document mpv_request_log_messages() return value 2017-06-14 10:23:13 +02:00
misc misc: add a thread pool 2017-04-01 20:32:01 +02:00
options dec_video: change license to LGPL (almost) 2017-06-18 18:58:36 +02:00
osdep win32: pthread: avoid using TLS, simplify pthread_t 2017-06-15 16:33:42 +02:00
player javascript: replace custom MIN macro with MPMIN 2017-06-17 14:28:42 +02:00
stream Drop/move img_fourcc.h 2017-06-18 15:13:45 +02:00
sub options: slight cleanup of --sub-ass-style-override 2017-06-07 15:55:03 +02:00
ta Fix use of ISC license 2017-04-15 16:20:00 +02:00
test chmap_sel: prefer inexact equivalents over perfect upmix 2016-01-04 19:17:56 +01:00
video dec_video: change license to LGPL (almost) 2017-06-18 18:58:36 +02:00
waftools build: remove checks for libGL 2017-04-26 17:09:16 +02:00
.gitignore player: move builtin profiles to a separate file 2016-09-15 14:50:38 +02:00
.travis.yml travis: disable OSX 2017-02-18 13:21:34 +01:00
Copyright dec_video: change license to LGPL (almost) 2017-06-18 18:58:36 +02:00
LICENSE
…
README.md README: add example compilation commands 2017-06-02 21:13:29 +02:00
RELEASE_NOTES Release 0.25.0 2017-04-23 01:57:53 +02:00
VERSION Update VERSION 2017-04-23 01:57:53 +02:00
appveyor.yml Add Appveyor CI integration for Windows builds 2016-05-12 23:34:06 +10:00
bootstrap.py build: update waf 2017-02-17 18:54:21 +01:00
mpv_talloc.h mpv_talloc.h: rename from talloc.h 2016-01-11 21:05:55 +01:00
version.sh version.sh: append -dirty if the working tree contains modifications 2017-06-16 17:20:44 +02:00
wscript vf_dlopen: remove this filter 2017-06-18 13:55:40 +02:00
wscript_build.py vf_dlopen: remove this filter 2017-06-18 13:55:40 +02:00

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 Vista 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 completely 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 inidcated 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) At least FFmpeg 3.2.2 or Libav 12 is required. For hardware decoding with vaapi and vdpau, FFmpeg 3.3 or Libav git is required.
  • 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) (FFmpeg 3.3 or Libav git is also required.)

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 (has to be explicitly enabled when compiling ffmpeg)
  • libx264/libmp3lame/libfdk-aac if you want to use encoding (has 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 (distro versions may be too old to work at all or work well). 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

Using the latest FFmpeg release (or FFmpeg git master) is strongly recommended. Older versions are unsupported, even if the build system still happens to accept them. The main reason mpv still builds with older FFmpeg versions is to evade arguing with people (users, distros) who insist on using older FFmpeg versions for no rational reason.

If you want to use a stable FFmpeg release, use the latest release, which has most likely the best maintenance out of all stable releases. Older releases are for distros, and at best receive basic changes like fixing critical security issues or build fixes, and at worst are completely abandoned.

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.

Contributing

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.

Relation to MPlayer and mplayer2

mpv is based on mplayer2, which in turn is based on the original MPlayer (also called mplayer, mplayer-svn, mplayer1). Many changes have been made, a large part of which is incompatible or completely changes how the player behaves. Although there are still many similarities to its ancestors, mpv should generally be treated as a completely different program.

mpv was forked because we wanted to modernize MPlayer. This includes removing cruft (including features which stopped making sense 10 years ago), and of course adding modern features. Such huge and intrusive changes made it infeasible to work directly with MPlayer, which is mostly focused on preservation, so a fork had to be made. (Actually, mpv is based on mplayer2, which already started this process of removing cruft.)

In general, mpv should be considered a completely new program, rather than a MPlayer drop-in replacement.

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

Contact

Most activity happens on the IRC channel and the github issue tracker. The mailing lists are mostly unused.

  • 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.

License

Mostly GPLv2 or later. See details.