mpv 0.26版本更新 Linux和OSX中高質素播放器

MPV是Linux系統發展起來建基於mplayer2和MPlayer的播放器，近乎無任何元件既極簡潔介面成為佢既特色之一，另外支援OpenGL既高質素影像輸出，令MPV成為Linux同OSX(mac os)中一個代表高畫質既播放器。

MPV player亦支援多種檔案格式mp4、mkv、avi、ts等；多種影像壓格式x264/avc、x265/hevc、vp9、xvid等；不同音訊格式mp3、aac、flac等，所以支援極多影片或聲音檔案。
在windows是mpc-hc、mpc-be、potplayer以外的選擇，在linux/OSX是vlc、smplayer之外的選項。

安裝教學：http://ppkkkp.blogspot.com/2016/10/mpv-player.html

更新內容


最主要增加HDR(廣色域)的支援，現在不需特別設定便能正常播放HDR的影片，以及轉換功能的字眼，用家要留意某些功能有否無效，需轉換正確字眼。

v0.26.0

VA-API/VDPAU hardware decoding now requires FFmpeg > 3.2.
DVB support is disabled by default since it does not work with some older kernels.
Built-in V4L TV support is disabled by default. av://v4l2 can be used instead.
Support for C plugins is now enabled by default (#4491).

Many more parts of the player are now licensed under LGPL, see Copyright file.
Thanks to all contributors who have agreed to relicensing of their changes!
See #2033 for details.

Features
Added
Universal Windows Plaform (UWP) support (libmpv only)
csputils: implement sony s-gamut
js: add javascript scripting support using MuJS
See DOCS/man/javascript.rst for more details
vo_opengl: add new HDR tone mapping algorithm (mobius, now default)
vo_opengl: hwdec_cuda: Support separate decode and display devices
vo_opengl: implement sony s-log1 and s-log2 trc
vo_opengl: implement support for OOTFs and non-display referred content
Removed
vf_dlopen: remove this filter
Options and Commands
Added
vo_opengl: add --tone-mapping-desaturate
vo_opengl: support tone-mapping-param for clip
ytdl_hook: add option to exclude URLs from being parsed
Changed
allow setting profile option with libmpv
audio: move replaygain control to top-level options
external_files: parse ~ in --{sub,audio}-paths
options: change --sub-fix-timing default to no (#4484)
options: expose string list actions for --sub-file option
options: slight cleanup of --sub-ass-style-override
signfs → scale
--sub-ass-style-override → --sub-ass-override
renamed the HDR TRCs st2084 and std-b67 to pq and hlg respectively
replace vf_format's peak suboption by sig-peak, which is relative to the reference white level instead of in cd/m^2
the following options change to append-by-default (and possibly separator):
--script
video: change --video-aspect-method default value to container
Deprecated
m_option: deprecate multiple items for -add etc.
player: deprecate "osd" command
--audio-file-paths => --audio-file-path
--sub-paths => --sub-file-path
--opengl-shaders => --opengl-shader
--sub-paths => --sub-file-paths
the following options are deprecated for setting via API:
"script" (use "scripts")
"sub-file" (use "sub-files")
"audio-file" (use "audio-files")
"external-file" (use "external-files")
(the compatibility hacks for this will be removed after this release)
Removed
chmap: remove misleading "downmix" channel layout name (#4545)
demux_lavf: remove --demuxer-lavf-cryptokey option (#4579)
input.conf: drop TV/DVB bindings
options: remove remaining deprecated audio device selection options
--alsa-device
--oss-device
--coreaudio-exclusive
--pulse-sink
--rsound-host/--rsound-port
--ao-sndio-device
--ao-wasapi-exclusive
--ao-wasapi-device
remove option --target-brightness
remove property "video-params/nom-peak"
Fixes and Minor Enhancements
TOOLS/lua/autoload.lua: actually sort files case insensitive (#4398)
TOOLS/lua/autoload.lua: ignores all files starting with "."
ao_openal: kill off device listing (#4311)
ao_pulse: reorder format choice to prefer float and S32 over S16 as fallback format
ao_wasapi: try correct initial format (#4582)
command: add missing change notification for playlist-shuffle (#4573)
demux_disc: fix bluray subtitle language retrieval (#4611)
demux_mkv: fix alpha with vp9 + libvpx
demux_mkv: support FFmpeg A_MS/ACM extensions
ipc-unix: don’t truncate the message on EAGAIN (#4452)
ipc: raise json nesting limit (#4394)
macOS: fix mpv-wrapper.sh when used with csh or tcsh shell
macOS: properly unhide Dock when quitting during System fs animation
mpv_identify: replace deprecated fps property (#4550)
options/path: fallback to USERPROFILE if HOME isn't set
player: close audio device on no audio track
player: fix potential segfault when playing dvd:// with DVD disabled (#4393)
player: prevent seek position to jump around adjacent keyframes, e.g. when dragging the OSC bar on short videos (#4183)
vo_opengl: bump up SHADER_MAX_HOOKS and MAX_TEXTURE_HOOKS to 64
vo_opengl: correct off-by-one in scale=oversample
vo_opengl: do not use vaapi-over-GLX (#4555)
vo_opengl: fall back to ordered dither instead of blowing up (#4519)
vo_opengl: tone map in linear XYZ instead of RGB
x11: add 128x128 sized icon support
ytdl_hook: add a header to support geo-bypass
ytdl_hook: don't override start time set by saved state
ytdl_hook: don't override user-set start time
ytdl_hook: treat single-entry playlists as a single video
This listing is not complete. Check DOCS/client-api-changes.rst for a history
of changes to the client API, and DOCS/interface-changes.rst for a history
of changes to other user-visible interfaces.
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