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Command line video player
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wm4 a090c07453 demux_lavf: add workaround for broken libavformat seek behavior
Seeking before the start of a .flac file (such as seeking backwards when
the file just started) generates a bunch of decoding errors and audible
artifacts. Also, the audio output doesn't match the reported playback
position. The errors printed to the terminal are:

[flac @ 0x8aca1c0]invalid sync code
[flac @ 0x8aca1c0]invalid frame header
[flac @ 0x8aca1c0]decode_frame() failed

This is most likely a problem with the libavformat API. When seeking
with av_seek_frame() fails, the demuxer can be left in an inconsistent
state. ffplay has the same issue [1].

Older versions of mpv somehow handled this fine. Bisection shows that
commit b3fb7c2 caused this regression by removing code that retried
failed seeks with an inverted AVSEEK_FLAG_BACKWARD flag. This code was
removed because it made it harder to stop playback of a file by seeking
past the end of the file (expecting this is rather natural when skipping
through multiple files by seeking, and the internal mplayer demuxers
also did this).

As a workaround, re-add the original code, but only for the backwards
seeking case.

Also note that the original intention of the code removed in b3fb7c2 was
not dealing with this case, but something else. It also had to do with
working around weird libavformat situations, though. It's not perfectly
clear what exactly. See commit 1ad332f.

[1] https://ffmpeg.org/trac/ffmpeg/ticket/2282
2013-02-19 01:49:01 +01:00
audio Rename af_volnorm to af_drc 2013-02-12 09:53:33 +01:00
compat build: make it work on somewhat older ffmpeg versions 2013-01-31 17:42:21 +01:00
core parser-cfg: fix profile-desc 2013-02-18 17:01:25 +01:00
demux demux_lavf: add workaround for broken libavformat seek behavior 2013-02-19 01:49:01 +01:00
DOCS manpage: improve configuration file section a bit 2013-02-17 21:06:34 +01:00
etc core: redo how codecs are mapped, remove codecs.conf 2013-02-10 17:25:56 +01:00
osdep Prefix keycode defines with MP_ 2013-02-12 10:27:00 +01:00
stream core: redo how codecs are mapped, remove codecs.conf 2013-02-10 17:25:56 +01:00
sub cleanup: remove duplicated function, move escape parsing function 2013-02-16 23:24:46 +01:00
TOOLS demux_mkv: support V_UNCOMPRESSED video tracks 2013-01-24 17:45:13 +01:00
video vo_xv: fix green border on the right 2013-02-14 20:41:09 +01:00
.gitignore core: redo how codecs are mapped, remove codecs.conf 2013-02-10 17:25:56 +01:00
AUTHORS documentation: remove Changelog, rewrite README 2011-02-15 12:04:32 +02:00
configure configure: fix recently added tests 2013-02-11 01:08:48 +01:00
Copyright Copyright: cleanup entries for removed code 2013-02-03 16:53:49 +01:00
LICENSE Copyright, LICENSE: change binary license to GPL 3 2011-03-24 23:40:29 +02:00
Makefile Rename af_volnorm to af_drc 2013-02-12 09:53:33 +01:00
README.rst README: add a new one using ReST 2013-01-07 21:09:11 +01:00
talloc.c talloc: fix strndup group of functions 2012-10-12 10:10:32 +02:00
talloc.h clang: fix all warnings except deprecations 2012-11-13 22:19:18 +01:00
version.sh version.sh: fix git rev. generation (.git is not always a directory) 2013-02-06 23:03:37 +01:00

mpv
###

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. For
more information see the output of ``./configure --help`` for a list of options,
or look at the list of enabled and disabled features printed after running
``./configure``. If you think you have support for some feature installed
but configure fails to detect it, the file ``config.log`` may contain
information about the reasons for the failure.

Essential dependencies (incomplete list):

- gcc or clang
- X development headers (xlib, X extensions, libvdpau, libGL, libXv, ...)
- Audio output development headers (libasound, pulseaudio)
- fribidi, freetype, fontconfig development headers (for libass)
- libass
- FFmpeg libraries (libavutil libavcodec libavformat libswscale libpostproc)
- libjpeg
- libquvi if you want to play Youtube videos directly
- libx264 if you want to use encoding (has to be explicitly enabled when
  compiling ffmpeg)

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.

Bug reports
===========

Please use the `issues 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.

Contacts
========

You can find us on IRC in ``#mpv-player`` on ``irc.freenode.net``

.. _changes: https://github.com/mpv-player/mpv/blob/master/DOCS/man/en/changes.rst
.. _mpv-build: https://github.com/mpv-player/mpv-build
.. _homebrew-mpv: https://github.com/mpv-player/homebrew-mpv
.. _issues tracker: https://github.com/mpv-player/mpv/issues