Using JSON API

• Run mpv with `--input-ipc-server=/tmp/mpvsocket`
• Send commands `echo '{ "command": ["set_property", "pause", true] }' | socat - /tmp/mpvsocket`

Using SIGSTOP and SIGCONT to jam up the process

• kill -s STOP $(pidof mpv)
• kill -s CONT $(pidof mpv)