I started using mpv as media player instead vlc. vlc has become unstable
often producing segmentation fault, skipping frames. The package names
is mpv.

It has tiny package size less than 1.5 MB.

$ mpv --version
mpv 0.8.3 (C) 2000-2015 mpv/MPlayer/mplayer2 projects
  built on Tue Mar 17 06:56:30 UTC 2015
ffmpeg library versions:
    libavutil       54.20.100
    libavcodec      56.26.100
    libavformat     56.25.101
    libswscale      3.1.101
    libavfilter     5.11.102
    libswresample   1.1.100

The user can modify or add key bindings using the configuration file
~/.config/mpv/input.conf

I downloaded input.conf file from
https://raw.githubusercontent.com/mpv-player/mpv/master/etc/input.conf

I added two key bindings to reduce the window size like below, moved the
input.conf file to ~/.config/mpv/ directory.

#5 add gamma -1
#6 add gamma 1
#7 add saturation -1
#8 add saturation 1
Alt+0 set window-scale 0.5
Alt+1 set window-scale 0.75
#Alt+2 set window-scale 2.0