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MPV

Key commands: https://mpv.io/manual/master/#keyboard-control

f       : Fullscreen.
Shift+# : Switch audio channel.
( )     : Left, right audio channel.
s       : Take screenshot.
Ctrl+t  : Toggle stay-on-top. Play video on top of other windows.
j       : Cycle through the available subtitles.
RIGHT   : Next 10 seconds.
LEFT    : Previous 10 seconds.
UP      : Next minute.
DOWN    : Previous minute.
PGUP    : Next chapter.
PGDWN   : Previous chapter.

Play video fullscreen.

mpv --fs videofile.avi

Play video at 70% of the volume.

mpv --volume=70 videofile.avi

Play video at specific time.

mpv --start=00:01:03 --end=00:02:01 videofile.avi

Play video at 50% of your screen size.

mpv --autofit=50% videofile.avi

Repeat / Loop video

mpv --loop=4 videofile.avi
mpv --loop=inf videofile.avi

Show runtime by default.

mpv --osd-level=2 videofile.avi
# Or, put osd-level=2 in ~/.config/mpv/mpv.conf.
# Level 3 will show total video length.

Find and play videos: xuanngo2001/cust-live-deb#268

mpv -playlist <(find "$PWD" -type f)
# $PWD is required. Otherwise, it'll append relative path to the file descriptor's location.
#   e.g: "/dev/fd/./path/to/video-file.avi", which would fail to open.

Play devices.

mpv dvd://1     --dvd-device=/dev/sr0/or/iso/
mpv dvdnav://2  --dvd-device=/dev/sr0/or/iso/
mpv bd://       --bluray-device=/path/to/bd/
mpv cdda://     --cdrom-device=/path/to/bd/

Webcam.

mpv av://v4l2:/dev/video0

Extract video file at a specific time

mpv videofile.avi -o excerptvideo.avi --start=00:01:00 --end=00:03:35

Extract audio from video file

mpv videofile.avi -o audiofile.mp3 --no-video

Extract audio from video file at a specific time

mpv videofile.avi -o audiofile.mp3 --no-video --start=00:01:00 --end=00:03:35

Extract audio from video file at a specific time for a relative length.

mpv videofile.avi -o audiofile.mp3 --no-video --start=0 --length=10

Take screenshot a specific time.(--no-terminal: turn off output)

mpv videofile.avi --no-audio --vo=image --start=2% --frames=1 -o output.jpg

Encoding: https://github.com/mpv-player/mpv/blob/master/DOCS/encoding.rst

cat /etc/mpv/encoding-profiles.conf  # All preset profiles.
mpv infile -o outfile.avi --vf=fps=25 -ovc mpeg4   -ovcopts qscale=4                              -oac libmp3lame -oacopts ab=128k
mpv infile -o outfile.mkv             -ovc libx264 -ovcopts preset=medium,crf=23,profile=baseline -oac libvorbis  -oacopts qscale=3
mpv infile -o outfile.mp4             -ovc libx264 -ovcopts preset=medium,crf=23,profile=baseline -oac aac        -oacopts ab=128k
mpv infile -o outfile.mkv -of webm    -ovc libvpx  -ovcopts qmin=6,b=1000000k                     -oac libvorbis  -oacopts qscale=3

Get duration

mpv video.avi --no-audio --vo=null --frames=1 2>&1 >/dev/null | grep '^V: ' | head -n1 | sed 's|.*/||' | sed 's/(.*//' | xargs

Print video info

find . -type f -print0 | xargs -0 mpv --no-audio --vo=null --frames=1

Subtitle

mpv --sub-visibility=no video.avi
mpv --sid=no            video.avi

Reading Material