mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 17:42:17 +00:00
3b8dfddb4c
Make the VF/VO/AO option parser available to audio filters. No audio filter uses this yet, but it's still a quite intrusive change. In particular, the commands for manipulating filters at runtime completely change. We delete the old code, and use the same infrastructure as for video filters. (This forces complete reinitialization of the filter chain, which hopefully isn't a problem for any use cases. The old code forced reinitialization too, but it could potentially allow a filter to cache things; e.g. consider loaded ladspa plugins and such.)
238 lines
12 KiB
ReStructuredText
238 lines
12 KiB
ReStructuredText
CHANGES FROM OTHER VERSIONS OF MPLAYER
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======================================
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**mpv** is based on mplayer2, which in turn is based on the original
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MPlayer (also called mplayer, mplayer-svn, mplayer1). Many changes
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have been made. Some changes are incompatible, or completely change how the
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player behaves.
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General Changes for MPlayer to mplayer2
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---------------------------------------
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* Removal of the internal GUI, MEncoder, OSD menu
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* Better pause handling (do not unpause on a command)
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* Better MKV support (such as ordered chapters)
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* vo_vdpau improvements
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* Precise seeking support
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* No embedded copy of ffmpeg and other libraries
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* Native OpenGL backend for OSX
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* General OSX improvements
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* Improvements in audio/video sync handling
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* Cleaned up terminal output
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* Gapless audio support (``--gapless-audio``)
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* Improved responsiveness on user input
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* Support for modifier keys (alt, shift, ctrl) in input.conf
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* OSS4 volume control
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* More correct color reproduction (color matrix generation)
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* Use libass for subtitle rendering by default (better quality)
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* Generally preferring ffmpeg/libav over internal demuxers and decoders
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* Improvements when playing multiple files (``--fixed-vo``)
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* Screenshot improvements (instant screenshots without 1-frame delay)
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* Improved support for PulseAudio
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* General code cleanups
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* Many more changes
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General Changes for mplayer2 to mpv
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-----------------------------------
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* Removal of lots of unneeded code to encourage developer activity (less
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obscure scary zombie code that kills any desire for hacking the codebase)
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* Removal of dust and dead bodies (code-wise), such as kernel drivers for
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decades old hardware
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* Removal of support for dead platforms
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* Generally improved MS Windows support (dealing with unicode filenames,
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improved ``--vo=direct3d``, improved window handling)
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* Better OSD rendering (using libass). This has full unicode support, and
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languages like Arabic should be better supported.
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* Cleaned up terminal output (nicer status line, less useless noise)
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* Support for playing URLs of popular streaming sites directly
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(e.g. ``mpv https://www.youtube.com/watch?v=...``)
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* Improved OpenGL output (``--vo=opengl-hq``)
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* Make ``--softvol`` default (**mpv** is not a mixer control panel)
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* Improved support for .cue files
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* Screenshot improvements (can save screenshots as JPG or PNG, configurable
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filenames, support for taking screenshots with or without subtitles - the
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``screenshot`` video filter is not needed anymore, and should not be put
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into the mpv config file)
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* Removal of teletext support
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* Replace image VOs (``--vo=jpeg`` etc.) with ``--vo=image``
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* Do not lose settings when playing a new file in the same player instance
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* New location for config files, new name for the binary.
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* Slave mode compatibility broken (see below)
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* Encoding functionality (replacement for mencoder, see ``DOCS/encoding.rst``)
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* Remove ``--vo=gif89a``, ``--vo=md5sum``, ``--vo=yuv4mpeg``, as encoding can
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handle these use cases. For yuv4mpeg, for example, use:
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``mpv input.mkv -o output.y4m --no-audio --oautofps --oneverdrop``.
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* Image subtitles (DVDs etc.) are rendered in color and use more correct
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positioning (color can be disabled with ``--sub-gray``)
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* General code cleanups
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* Many more changes
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Detailed Listing of User-visible Changes
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----------------------------------------
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This listing is about changed command line switches, slave commands, and similar
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things. Completely removed features are not listed.
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Command Line Switches
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~~~~~~~~~~~~~~~~~~~~~
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* There is a new command line syntax, which is generally preferred over the old
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syntax. ``-optname optvalue`` becomes ``--optname=optvalue``.
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The old syntax will not be removed in the near future. However, the new
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syntax is mentioned in all documentation and so on, so it is a good thing to
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know about this change.
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(The new syntax was introduced in mplayer2.)
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* In general, negating switches like ``-noopt`` now have to be written as
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``-no-opt``, or better ``--no-opt``.
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* Per-file options are not the default anymore. You can explicitly specify
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file-local options. See ``Usage`` section.
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* Table of renamed/replaced switches:
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=========================== ========================================
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Old New
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=========================== ========================================
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``-no<opt>`` ``--no-<opt>`` (add a dash)
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``-nosound`` ``--no-audio``
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``-use-filename-title`` ``--title="${filename}"``
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``-loop 0`` ``--loop=inf``
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``-hardframedrop`` ``--framedrop=hard``
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``-osdlevel`` ``--osd-level``
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``-delay`` ``--audio-delay``
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``-subdelay`` ``--sub-delay``
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``-subpos`` ``--sub-pos``
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``-forcedsubsonly`` ``--sub-forced-only``
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``-benchmark`` ``--untimed`` (no stats)
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``-xineramascreen`` ``--screen`` (different values)
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``-ss`` ``--start``
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``-endpos`` ``--length``
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``--cursor-autohide-delay`` ``--cursor-autohide``
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``-sub-fuzziness`` ``--autosub-match``
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``-subfont`` ``--sub-text-font``
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``-font`` ``--osd-font``
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``-subfont-*`` ``--sub-text-*``, ``--osd-*``
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``-subfont-text-scale`` ``--sub-scale``
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``-spugauss`` ``--sub-gauss``
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``-vobsub`` ``--sub`` (pass the .idx file)
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``-ass-bottom-margin`` ``--vf=sub=bottom:top``
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``-vc ffh264vdpau`` (etc.) ``--hwdec=vdpau``
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``-ac spdifac3`` ``--ad=spdif:ac3`` (see ``--ad=help``)
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``-afm hwac3`` ``--ad=spdif:ac3,spdif:dts``
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``-x W``, ``-y H`` ``--geometry=WxH`` + ``--no-keepaspect``
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``-xy W`` ``--autofit=W``
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``-a52drc level`` ``--ad-lavc-ac3drc=level``
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``-dumpstream`` ``--stream-dump=<filename>``
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``-capture`` ``--stream-capture=<filename>``
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``-stop-xscreensaver`` ``--stop-screensaver``
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``-subfile`` ``--sub``
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``-lavdopts ...`` ``--vd-lavc-...``
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``-lavfdopts`` ``--demuxer-lavf-...``
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``-rawaudio ...`` ``--demuxer-rawaudio-...``
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``-rawvideo ...`` ``--demuxer-rawvideo-...``
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``--mixer`` AO suboptions (``alsa``, ``oss``)
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``--mixer-channel`` AO suboptions (``alsa``, ``oss``)
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=========================== ========================================
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.. note::
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``-opt val`` becomes ``--opt=val``.
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input.conf and Slave Commands
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* Table of renamed input commands:
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This lists only commands that are not always gracefully handled by the
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internal legacy translation layer. If an input.conf contains any legacy
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commands, they will be displayed with ``-v`` when it is loaded, and show
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and the replacement commands.
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Properties containing ``_`` to separate words use ``-`` instead.
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+--------------------------------+----------------------------------------+
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| Old | New |
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+================================+========================================+
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| ``pt_step 1 [0|1]`` | ``playlist_next [weak|force]`` |
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| | (translation layer cannot deal with |
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| | whitespace) |
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+--------------------------------+----------------------------------------+
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| ``pt_step -1 [0|1]`` | ``playlist_prev [weak|force] (same)`` |
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+--------------------------------+----------------------------------------+
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| ``switch_ratio [<ratio>]`` | ``set aspect <ratio>`` |
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| | |
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| | ``set aspect 0`` (to reset aspect) |
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+--------------------------------+----------------------------------------+
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| ``step_property_osd <prop>`` | ``cycle <prop> <step>`` (wraps), |
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| ``<step> <dir>`` | ``add <prop> <step>`` (clamps). |
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| | ``<dir>`` parameter unsupported. Use |
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| | a negative ``<step>`` instead. |
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+--------------------------------+----------------------------------------+
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| ``step_property <prop>`` | Prefix ``cycle`` or ``add`` with |
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| ``<step> <dir>`` | ``no-osd``: ``no-osd cycle <prop>`` |
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| | ``<step>`` |
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+--------------------------------+----------------------------------------+
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| ``osd_show_property_text`` | ``show_text <text>`` |
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| ``<text>`` | The property expansion format string |
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| | syntax slightly changed. |
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+--------------------------------+----------------------------------------+
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| ``osd_show_text`` | Now does the same as |
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| | ``osd_show_property_text``. Use the |
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| | ``raw`` prefix to disable property |
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| | expansion. |
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+--------------------------------+----------------------------------------+
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| ``show_tracks`` | ``show_text ${track-list}`` |
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+--------------------------------+----------------------------------------+
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| ``show_chapters`` | ``show_text ${chapter-list}`` |
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+--------------------------------+----------------------------------------+
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| ``af_switch``, ``af_add``, ... | ``af [set|add|...]`` |
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+--------------------------------+----------------------------------------+
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Other
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~~~~~
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* The playtree has been removed. **mpv**'s internal playlist is a simple and
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flat list now. This simplifies the code and makes **mpv** usage less
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confusing.
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* Slave mode is broken. This mode is entirely insane in the ``old`` versions of
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MPlayer. A proper slave mode application needed tons of code and hacks to get
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it right. The main problem is that slave mode is a bad and incomplete
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interface, and to get around that, applications parsed output messages
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intended for users. It is hard to know which messages exactly are parsed by
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slave mode applications. This makes it virtually impossible to improve
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terminal output intended for users without possibly breaking something.
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This is absolutely insane, and **mpv** will not try to keep slave mode
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compatible. If you are a developer of a slave mode application, contact us,
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and a new and better protocol can be developed.
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Policy for Removed Features
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---------------------------
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Features are a good thing, because they make users happy. As such, it is
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attempted to preserve useful features as far as possible. But if a feature is
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likely to be not used by many, and causes problems otherwise, it will be
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removed. Developers should not be burdened with fixing or cleaning up code that
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has no actual use.
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It is always possible to add back removed features. File a feature request if a
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feature you relied on has been removed, and you want it back. Though it might be
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rejected in the worst case, it is much more likely that it will be either added
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back, or that a better solution will be implemented.
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Why this Fork?
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--------------
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* MPlayer wants to maintain old code, even if it is very bad code. It seems
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mplayer2 was forked because MPlayer developers refused to get rid of all the
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cruft. The mplayer2 and MPlayer codebases also deviated enough to make a
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reunification unlikely.
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* mplayer2 development is slow, and it is hard to get in changes. Details
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withheld as to not turn this into a rant.
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* MPlayer rarely merged from mplayer2, and mplayer2 practically stopped
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merging from MPlayer (not even code cleanups or new features are merged)
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* **mpv** intends to continuously merge from mplayer-svn and mplayer2, while
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speeding up development. There is willingness for significant changes, even
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if this means breaking compatibility.
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