mpv/DOCS/man/en/changes.rst

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.. _changes:
CHANGES FROM OTHER VERSIONS OF MPLAYER
======================================
**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. Some changes are incompatible, or completely change how the
player behaves.
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General Changes for MPlayer-svn to mplayer2
-------------------------------------------
* Removal of the internal GUI, MEncoder, OSD menu
* Better pause handling (don't unpause on a command)
* Better MKV support (such as ordered chapters)
* vo_vdpau improvements
* Precise seeking support
* No embedded copy of ffmpeg and other libraries
* Native OpenGL backend for OSX
* General OSX improvements
* Improvements in audio/video sync handling
* Cleaned up terminal output
* Gapless audio support (``--gapless-audio``)
* Improved responsiveness on user input
* Support for modifier keys (alt, shift, ctrl) in input.conf
* OSS4 volume control
* More correct color reproduction (color matrix generation)
* Use libass for subtitle rendering by default (better quality)
* Generally preferring ffmpeg/libav over internal demuxers and decoders
* Improvements when playing multiple files (``--fixed-vo``)
* Screenshot improvements (instant screenshots without 1-frame delay)
* Improved support for PulseAudio
* General code cleanups
* Many more changes
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General Changes for mplayer2 to mpv
-----------------------------------
* Removal of lots of unneeded code to encourage developer activity (less
obscure scary zombie code that kills any desire for hacking the codebase)
* Removal of dust and dead bodies (code-wise), such as kernel drivers for
decades old hardware
* Removal of support for dead platforms
* Generally improved MS Windows support (dealing with unicode filenames,
improved ``--vo=direct3d``, improved window handling)
* Better OSD rendering (using libass). This has full unicode support, and
languages like Arabic should be better supported.
* Cleaned up terminal output (nicer status line, less useless noise)
* Support for playing URLs of popular streaming sites directly
(e.g. ``mpv https://www.youtube.com/watch?v=...``)
* Improved OpenGL output (``--vo=opengl-hq``)
* Make ``--softvol`` default (**mpv** is not a mixer control panel)
* Improved support for .cue files
* Screenshot improvements (can save screenshots as JPG or PNG, configurable
filenames, support for taking screenshots with or without subtitles - the
``screenshot`` video filter is not needed anymore, and should not be put
into the mpv config file)
* Removal of teletext support
* Replace image VOs (``--vo=jpeg`` etc.) with ``--vo=image``
* 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.
* Slave mode compatibility broken (see below)
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* Encoding functionality (replacement for mencoder, see ``DOCS/encoding.rst``)
* Remove ``--vo=gif89a``, ``--vo=md5sum``, ``--vo=yuv4mpeg``, as encoding can
handle these use cases. For yuv4mpeg, for example, use:
``mpv input.mkv -o output.y4m --no-audio --oautofps --oneverdrop``.
* Image subtitles (DVDs etc.) are rendered in color and use more correct
positioning (color can be disabled with ``--sub-gray``)
* General code cleanups
* Many more changes
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Detailed Listing of User-visible Changes
----------------------------------------
This listing is about changed command line switches, slave commands, and similar
things. Completely removed features are not listed.
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Command Line Switches
~~~~~~~~~~~~~~~~~~~~~
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* There is a new command line syntax, which is generally preferred over the old
syntax. ``-optname optvalue`` becomes ``--optname=optvalue``.
The old syntax will not be removed in the near future. However, the new
syntax is mentioned in all documentation and so on, so it's a good thing to
know about this change.
(The new syntax was introduced in mplayer2.)
* In general, negating switches like ``-noopt`` now have to be written as
``-no-opt``, or better ``--no-opt``.
* Per-file options are not the default anymore. You can explicitly specify
file local options. See ``Usage`` section.
* Table of renamed/replaced switches:
=================================== ===================================
Old New
=================================== ===================================
-no<opt> --no-<opt> (add a dash)
-nosound --no-audio
-use-filename-title --title="${filename}"
-loop 0 --loop=inf
-hardframedrop --framedrop=hard
-osdlevel --osd-level
-delay --audio-delay
-subdelay --sub-delay
-subpos --sub-pos
-forcedsubsonly --sub-forced-only
-ni --avi-ni
-benchmark --untimed (no stats)
-xineramascreen --screen (different values)
-ss --start
-endpos --length
--cursor-autohide-delay --cursor-autohide
-sub-fuzziness --autosub-match
-subfont --sub-text-font
-font --osd-font
-subfont-* --sub-text-*, --osd-*
osd: make the OSD and sub font more customizable Make more aspects of the OSD font customizable. This also affects the font used for unstyled subtitles (such as SRT), or when using the --no-ass option. This adds back some customizability that was lost with commit 74e7a1 (osd: use libass for OSD rendering). Removed options: --ass-border-color --ass-color --font --subfont --subfont-text-scale Added options: --osd-color --osd-border --osd-back-color --osd-shadow-color --osd-font --osd-font-size --osd-border-size --osd-margin-x --osd-margin-y --osd-shadow-offset --osd-spacing --sub-scale The font size is now specified in pixels as it would be rendered on a window with a height of 720 pixels. OSD and subtitles are always scaled with the window height, so specifying or expecting an absolute font size doesn't make sense. Such scaled pixel units are used to specify font border etc. as well. (Note: the font size is directly passed to libass. How the fonts are actually rasterized is outside of our control, but in theory ASS font sizes map to "script" pixels and then are scaled to screen size.) The default settings should be about the same, with slight difference due to rounding to the new scales. The OSD and subtitle fonts are not separately configurable. It has limited use and would double the number of newly added options, which would be more confusing than helpful. It could be easily added later, should the need arise. Other small details that change: - ASS_Style.Encoding is not set to -1 for subs anymore (assuming subs use VSFilter direction in -no-ass mode too) - use a different WrapStyle for OSD - ASS forced styles are not applied to OSD
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-subfont-text-scale --sub-scale
-spugauss --sub-gauss
-vobsub --sub (pass the .idx file)
-ass-bottom-margin --vf=sub=bottom:top
-vc ffh264vdpau (etc.) --hwdec=vdpau
core: redo how codecs are mapped, remove codecs.conf Use codec names instead of FourCCs to identify codecs. Rewrite how codecs are selected and initialized. Now each decoder exports a list of decoders (and the codec it supports) via add_decoders(). The order matters, and the first decoder for a given decoder is preferred over the other decoders. E.g. all ad_mpg123 decoders are preferred over ad_lavc, because it comes first in the mpcodecs_ad_drivers array. Likewise, decoders within ad_lavc that are enumerated first by libavcodec (using av_codec_next()) are preferred. (This is actually critical to select h264 software decoding by default instead of vdpau. libavcodec and ffmpeg/avconv use the same method to select decoders by default, so we hope this is sane.) The codec names follow libavcodec's codec names as defined by AVCodecDescriptor.name (see libavcodec/codec_desc.c). Some decoders have names different from the canonical codec name. The AVCodecDescriptor API is relatively new, so we need a compatibility layer for older libavcodec versions for codec names that are referenced internally, and which are different from the decoder name. (Add a configure check for that, because checking versions is getting way too messy.) demux/codec_tags.c is generated from the former codecs.conf (minus "special" decoders like vdpau, and excluding the mappings that are the same as the mappings libavformat's exported RIFF tables). It contains all the mappings from FourCCs to codec name. This is needed for demux_mkv, demux_mpg, demux_avi and demux_asf. demux_lavf will set the codec as determined by libavformat, while the other demuxers have to do this on their own, using the mp_set_audio/video_codec_from_tag() functions. Note that the sh_audio/video->format members don't uniquely identify the codec anymore, and sh->codec takes over this role. Replace the --ac/--vc/--afm/--vfm with new --vd/--ad options, which provide cover the functionality of the removed switched. Note: there's no CODECS_FLAG_FLIP flag anymore. This means some obscure container/video combinations (e.g. the sample Film_200_zygo_pro.mov) are played flipped. ffplay/avplay doesn't handle this properly either, so we don't care and blame ffmeg/libav instead.
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-ac spdifac3 --ad=spdif:ac3 (see --ad=help)
-afm hwac3 --ad=spdif:ac3,spdif:dts
-x W, -y H --geometry=WxH + --no-keepaspect
-xy W --autofit=W
-a52drc level --ad-lavc-ac3drc=level
-dumpstream --stream-dump=<filename>
-capture --stream-capture=<filename>
-stop-xscreensaver --stop-screensaver
-subfile --sub
-lavdopts ... --vd-lavc-...
-lavfdopts --demuxer-lavf-...
-rawaudio ... --demuxer-rawaudio-...
-rawvideo ... --demuxer-rawvideo-...
=================================== ===================================
*NOTE*: ``-opt val`` becomes ``--opt=val``.
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input.conf and Slave Commands
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Table of renamed input commands:
This lists only commands that are not always gracefully handled by the
internal legacy translation layer. If an input.conf contains any legacy
commands, they will be displayed with ``-v`` when it is loaded, and show
and the replacement commands.
Properties containing ``_`` to separate words use ``-`` instead.
+--------------------------------+----------------------------------------+
| Old | New |
+================================+========================================+
| pt_step 1 [0|1] | playlist_next [weak|force] |
| | (translation layer can't deal with |
| | whitespace) |
+--------------------------------+----------------------------------------+
| pt_step -1 [0|1] | playlist_prev [weak|force] (same) |
+--------------------------------+----------------------------------------+
| switch_ratio [<ratio>] | set aspect <ratio> |
| | set aspect 0 (to reset aspect) |
+--------------------------------+----------------------------------------+
| step_property_osd <prop> <step>| cycle <prop> <step> (wraps), |
| <dir> | add <prop> <step> (clamps). |
| | <dir> parameter unsupported. Use |
| | a negative step instead. |
+--------------------------------+----------------------------------------+
| step_property <prop> <step> | Prefix cycle or add with no-osd: |
| <dir> | no-osd cycle <prop> <step> |
+--------------------------------+----------------------------------------+
| osd_show_property_text <text> | show_text <text> |
| | The property expansion format string |
| | syntax slightly changed. |
+--------------------------------+----------------------------------------+
| osd_show_text | Now does the same as |
| | osd_show_property_text. Use the raw |
| | prefix to disable property expansion. |
+--------------------------------+----------------------------------------+
| show_tracks | show_text ${track-list} |
+--------------------------------+----------------------------------------+
| show_chapters | show_text ${chapter-list} |
+--------------------------------+----------------------------------------+
Other
~~~~~
* The playtree has been removed. **mpv**'s internal playlist is a simple and
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flat list now. This makes the code easier, and makes **mpv** usage less
confusing.
* Slave mode is broken. This mode is entirely insane in the ``old`` versions of
mplayer. A proper slave mode application needed tons of code and hacks to get
it right. The main problem is that slave mode is a bad and incomplete
interface, and to get around that, applications parsed output messages
intended for users. It's hard to know which messages exactly are parsed by
slave mode applications. This makes it virtually impossible to improve
terminal output intended for users without possibly breaking something.
This is absolutely insane, and **mpv** will not try to keep slave mode
compatible. If you're a developer of a slave mode application, contact us,
and a new and better protocol can be developed.
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Policy for Removed Features
---------------------------
Features are a good thing, because they make users happy. As such, it is
attempted to preserve useful features as far as possible. But if a feature is
likely to be not used by many, and causes problems otherwise, it will be
removed. Developers should not be burdened with fixing or cleaning up code that
has no actual use.
It's always possible to add back removed features. File a feature request if a
feature you relied on was removed, and you want it back. Though it might be
rejected in the worst case, it's much more likely that it will be either added
back, or that a better solution will be implemented.
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Why this Fork?
--------------
* mplayer-svn wants to maintain old code, even if it's very bad code. It seems
mplayer2 was forked, because mplayer-svn developers refused to get rid of
all the cruft. The mplayer2 and mplayer-svn codebases also deviated enough to
make a reunification unlikely.
* mplayer2 development is slow, and it's hard to get in changes. Details
withheld as to not turn this into a rant.
* mplayer-svn rarely merged from mplayer2, and mplayer2 practically stopped
merging from mplayer-svn (not even code cleanups or new features are merged)
* **mpv** intents to continuously merge from mplayer-svn and mplayer2, while
speeding up development. There is willingness for significant changes, even
if this means breaking compatibility.