[mpv] Add basic configuration

Added basic configuration file, setting up caching, subtitles,
audio and video settings, profiles for streaming.

Fixes #95

mpv/.config/mpv/mpv.conf

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+## mostly cobbled together from:
+## https://github.com/Tsubajashi/mpv-settings/blob/master/mpv.conf
+## https://github.com/haasn/gentoo-conf/blob/d3fd304fd7d8d816de6e280daf626b1b49a69893/home/nand/.mpv/config
+## with much gratitude
+
+#### player settings
+
+# do not open in fullscreen, do not create border
+fullscreen=no
+# if playing the last file in e.g. a playlist, simply pause after finishing
+keep-open=yes
+# allow remote operation through ipc, see https://mpv.io/manual/stable/#json-ipc
+input-ipc-server=/tmp/mpv-socket
+
+# display a little seek bar in term
+term-osd-bar=yes
+# colorful term output
+msg-color=yes
+# add module names to term output
+msg-module=yes
+
+### screenshots
+
+screenshot-directory=~/pictures/screenshots
+# filename_HH-MM-SS
+screenshot-template="screen_%F_%wH-%wM-%wS"
+screenshot-format=png
+# default compression rate (0 is no compression)
+screenshot-png-compression=7
+screenshot-tag-colorspace=yes
+
+### OSD
+
+# 2 options necessary for uosc, see https://github.com/darsain/uosc
+osc=no
+osd-bar=no
+
+osd-font='Iosevka Mono'
+osd-font-size=48
+
+### Subtitles
+
+## options and compatibility
+# vsfilter backward compatibility
+sub-ass-vsfilter-blur-compat=yes
+sub-ass-scale-with-window=no
+# custom ass style params
+sub-ass-force-style=Kerning=yes
+# fuzzy-search available subs in folder
+sub-auto=fuzzy
+# search for external subs in these relative subdirectories
+sub-file-paths-append=ass:srt:sub:subs:subtitles
+# make sure when seeking through mkv we try to display subs
+demuxer-mkv-subtitle-preroll=yes
+# use fonts embedded in the container if available
+embeddedfonts=yes
+# don't meddle with subtitle timing by default
+sub-fix-timing=no
+# do not blend subtitles, so that we can display them beyond the video borders
+blend-subtitles=no
+
+## look and style
+sub-ass-override=scale
+sub-scale=0.5
+sub-font="Liberation Sans"
+sub-font-size=70
+# put them a bit above seekbar -- not necessary imo
+# sub-margin-y=50
+sub-color="#FFFFFFFF"
+sub-border-color="#FF151515"
+sub-border-size=6
+sub-shadow-offset=1
+sub-shadow-color="#33000000"
+sub-spacing=0.5
+
+### Audio
+
+volume=80
+volume-max=150
+# find audio files even if slightly mismatched
+audio-file-auto=fuzzy
+# playing at different speed will pitch-correct
+audio-pitch-correction=yes
+# no audio popping on seek
+audio-stream-silence
+# lets mpv calc latency instead of PA; disable if errors on network playback or similar
+pulse-latency-hacks=yes
+
+### Video
+
+profile=opengl-hq
+opengl-early-flush=auto
+opengl-pbo=no
+# brigheen video slightly to account for daylight displaying
+gamma-factor=1.1
+# ever so slightly up saturation
+saturation=12
+# interpolation options, will take some more cpu
+interpolation=yes
+video-sync=display-resample
+
+### Cache
+
+# use cache if it seems like a networked connection
+cache=auto
+
+### youtube-dl setup
+
+ytdl=yes
+# never go beyond 1080p if it is avoidable
+ytdl-format=(bestvideo[vcodec=vp9.2][height<=1080]/bestvideo[vcodec=vp9][fps>30][height<=1080]/bestvideo[vcodec=vp9][height<=1080]/bestvideo[fps>30][height<=1080]/bestvideo[height>720])+(bestaudio[acodec=opus]/bestaudio)/best
+
+### Languages
+
+# prefer english subtitles, use german if you have to
+alang=en,eng,de,deu,ger
+# prefer original language, use dub if necessary
+slang=ja,jp,jpn,en,eng,de,deu,ger
+
+### Protocol configuration
+
+[network]
+# don't wait for buffering to be complete to show the window
+force-window=immediate
+cache=yes
+# create a huge cache to buffer most of videos
+demuxer-max-bytes=3000MiB
+demuxer-readahead-sec=500
+
+[protocol.http]
+profile=network
+
+[protocol.https]
+profile=network
+
+[protocol.ytdl]
+profile=network
+
+[extension.gif]
+interpolation=no
+loop-file=yes
+
+# for those yt playlists that are created in reverse order
+[reverse]
+ytdl-raw-options=playlist-reverse=

mpv/README.md

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+# mpv module
+
+[mpv](https://mpv.io) -- free, open-source, cross-platform media player
+
+mpv is set up to hopefully strike a balance between high quality playback, streaming with a reasonable speed and saving battery power.
+
+* mpv by default does not come with a gui, this configuration uses [uosc](https://github.com/darsain/uosc) to enable a comfortable gui
+* available subtitles are loaded and shown in a consistently high quality, as much as possible
+* easy screenshot grabbing is possible, saving to a default folder (`~/pictures/screenshots`, can be changed at top of `mpv.conf`)
+* audio is not meddled with too much, but should provide good default sound quality for pulseaudio
+* playback position is *not* saved for every file by default, but can be used when quitting with shift-q (default mpv behavior)
+* streaming video is optimized for a 1080p display, it will avoid qualities higher than that if possible
+* default video is adjusted for playback during the day, in a normally lit room