Some hints to use mpv in Slint.

By default the audio output is alsa to make sure you get sound without
further configuration, set in /etc/mpv/mpv.conf. The file mpv.conf
in the current directory just provides some examples of settings, and
hints that we also write below.

mpv has a lot of options, that you can know typing:
mpv --help
or:
man mpv

The man page for a lists of options.

This command:
mpv -list-options
displays the default values for most options.

Configuration files are read system-wide from /etc/mpv/mpv.conf
and per-user from ~/.config/mpv/mpv.conf, where per-user settings override
system-wide settings, all of which are overridden by the command line.

Configuration file settings and the command line options use the same
underlying mechanisms. Most options can be put into the configuration file
by dropping the preceding '--'.

For instance, the setting in /etc/mpv/mpv.conf:
ao=alsa
which is short for "audio output=alsa"
Should be written in the command line as an option, like:
mpv --ao=alsa ...

To list the values for this option you can type:
mpv --ao=help
and same for other options.

Be aware that not all values are effective, so try them before
putting your settings in ~/mpv/mpv.conf

Lines starting with '#' are comments and are ignored.

See the CONFIGURATION FILES section in the man page to know more.