local utils = require("mp.utils") local function hardsleep()    os.execute("sleep 1s")end local hooks = {"on_before_start_file", "on_load", "on_load_fail",               "on_preloaded", "on_unload", "on_after_end_file"} for _, name in ipairs(hooks) do    mp.add_hook(name, 0, function()        print("--- hook: " .. name)        hardsleep()        print("    ... continue")    end)end local events = {"start-file", "end-file", "file-loaded", "seek",                "playback-restart", "idle", "shutdown"}for _, name in ipairs(events) do    mp.register_event(name, function()        print("--- event: " .. name)    end)end local props = {"path", "metadata"}for _, name in ipairs(props) do    mp.observe_property(name, "native", function(prop, val)        print("property '" .. prop .. "' changed to '" ..              utils.to_string(val) .. "'")    end)end