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wm4 987146362e lua: add an utility function for starting processes
Because 1) Lua is terrible, and 2) popen() is terrible. Unfortunately,
since Unix is also terrible, this turned out more complicated than I
hoped. As a consequence and to avoid that this code has to be maintained
forever, add a disclaimer that any function in Lua's utils module can
disappear any time. The complexity seems a bit ridiculous, especially
for a feature so far removed from actual video playback, so if it turns
out that we don't really need this function, it will be dropped again.

The motivation for this commit is the same as with 8e4fa5fc.

Note that there is an "#ifndef __GLIBC__". The GNU people are very
special people and thought it'd be convenient to actually declare
"environ", even though the POSIX people, which are also very special
people, state that no header declares this and that the user has to
declare this manually. Since the GNU people overtook the Unix world with
their very clever "embrace, extend, extinguish" strategy, but not 100%,
and trying to build without _GNU_SOURCE is hopeless; but since there
might be Unix environments which support _GNU_SOURCE features partially,
this means that in practice "environ" will be randomly declared or not
declared by system headers. Also, gcc was written by very clever people
too, and prints a warning if an external variable is declared twice (I
didn't check, but I suppose redeclaring is legal C, and not even the gcc
people are clever enough to only warn against a definitely not legal C
construct, although sometimes they do this), ...and since we at mpv hate
compiler warnings, we seek to silence them all. Adding a configure test
just for a warning seems too radical, so we special-case this against
__GLIBC__, which is hopefully not defined on other libcs, especially not
libcs which don't implement all aspects of _GNU_SOURCE, and redefine
"environ" on systems even if the headers define it already (because they
support _GNU_SOURCE - as I mentioned before, the clever GNU people wrote
software THAT portable that other libcs just gave up and implemented
parts of _GNU_SOURCE, although probably not all), which means that
compiling mpv will print a warning about "environ" being redefined, but
at least this won't happen on my system, so all is fine. However, should
someone complain about this warning, I will force whoever complained
about this warning to read this ENTIRE commit message, and if possible,
will also force them to eat a printed-out copy of the GNU Manifesto, and
if that is not enough, maybe this person could even be forced to
convince the very clever POSIX people of not doing crap like this:
having the user to manually declare somewhat central symbols - but I
doubt it's possible, because the POSIX people are too far gone and only
care about maintaining compatibility with old versions of AIX and HP-UX.

Oh, also, this code contains some subtle and obvious issues, but writing
about this is not fun.
2014-10-19 05:51:37 +02:00
audio audio/out/push: reset projected EOF time on new data 2014-10-14 22:07:04 +02:00
common common: fix \x-style escaping 2014-10-16 21:17:01 +02:00
demux demux: print a warning if stream is not seekable 2014-10-17 18:18:20 +02:00
DOCS lua: add an utility function for starting processes 2014-10-19 05:51:37 +02:00
etc etc/mplayer-input.conf: fix off by one error 2014-10-10 23:07:31 +02:00
input ipc: fix a small memory leak 2014-10-17 22:31:14 +02:00
libmpv client API: qthelper: remove commented code 2014-10-14 22:05:15 +02:00
misc misc: add JSON parser 2014-10-17 20:46:31 +02:00
options win32: get rid of mp_stat in the normal source code 2014-10-17 22:15:19 +02:00
osdep win32: remove an unneeded mechanism 2014-10-19 05:51:25 +02:00
player lua: add an utility function for starting processes 2014-10-19 05:51:37 +02:00
stream lua: add an utility function for starting processes 2014-10-19 05:51:37 +02:00
sub sub: adjustments to --ass-style-override option 2014-10-17 02:06:08 +02:00
ta ta/README: fix typos 2014-10-13 18:56:42 +02:00
TOOLS TOOLS/vf_dlopen/ildetect.sh: remove duplicated assigment 2014-10-16 21:17:01 +02:00
video cocoa: reintroduce async resize 2014-10-18 18:30:22 +02:00
waftools build: remove useless function 2014-10-11 21:03:13 +02:00
.gitignore gitignore: fix manpage entries 2014-08-06 20:35:55 +02:00
.travis.yml travis: add OS X continous integration 2014-07-21 20:43:39 +02:00
bootstrap.py build: update waf to version 1.8.1 2014-10-11 20:54:42 +02:00
Copyright Copyright, LICENSE: switch to GPL version 2 or later 2013-10-13 01:36:10 +02:00
LICENSE Copyright, LICENSE: switch to GPL version 2 or later 2013-10-13 01:36:10 +02:00
old-configure lua: add an utility function for starting processes 2014-10-19 05:51:37 +02:00
old-makefile old-build: adjust to latest changes 2014-10-17 21:35:28 +02:00
README.md README: fix link to release policy document 2014-06-30 23:23:50 +02:00
talloc.h Move compat/ and bstr/ directory contents somewhere else 2014-08-29 12:31:52 +02:00
travis-deps travis: use homebrew to build ffmpeg on OS X 2014-08-01 10:38:18 +02:00
version.sh TOOLS: shellcheck: quote variable expansions 2014-09-16 17:32:33 +02:00
wscript lua: add an utility function for starting processes 2014-10-19 05:51:37 +02:00
wscript_build.py input: implement --input-file on unix using the IPC support 2014-10-17 20:47:43 +02:00

mpv

Build Status

Overview

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

If you are wondering what's different from mplayer2 and MPlayer you can read more about the changes.

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.

NOTE: Using the old build system (with ./old-configure) should still work, but will be removed in a future version of mpv.

Essential dependencies (incomplete list):

  • gcc or clang
  • X development headers (xlib, X extensions, libvdpau, libGL, libXv, ...)
  • Audio output development headers (libasound, pulseaudio)
  • FFmpeg libraries (libavutil libavcodec libavformat libswscale libavresample) At least FFmpeg 2.1.4 or Libav 10 is required.
  • libjpeg (for screenshots)
  • libquvi if you want to play Youtube videos directly

Libass dependencies:

  • gcc or clang, yasm on x86 and x86_64
  • fribidi, freetype, fontconfig development headers (for libass)

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 are running Mac OSX and using homebrew we provide homebrew-mpv, an up to date formula that compiles mpv with sensible dependencies and defaults for OSX.

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. See the wiki article about the issue.

Release cycle

Every few months, a new release is cut off of the master branch and is assigned a 0.X.0 version number.

As part of the maintenance process, minor releases are made, which are assigned 0.X.Y version numbers. Minor releases contain bug fixes only. They never merge the master branch, and no features are added to it. Only the latest release is maintained.

The goal of releases is to provide stability and an unchanged base for the sake of Linux distributions. If you want the newest features, just use the master branch, which is stable most of the time, except sometimes, when it's not.

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.

Contact

These forms of contact are meant to ask questions about mpv usage, give feedback on mpv and discuss it's development.

If possible, please avoid posting bugs here and use the issue tracker instead.

  • Users IRC Channel: #mpv-player on irc.freenode.net
  • Users Mailing List: mpv-users@googlegroups.com (Archive / Subscribe).
  • Devel Mailing List: mpv-devel@googlegroups.com (Archive / Subscribe)

To contact the mpv team in private write to mpv-team@googlegroups.com.