mpv acceleration

local lastmsg=1
print("Acceleration loaded")
function do_accelerate()
        -- print("Accelerate by 0.1%")
        local speed=mp.get_property_number("speed")*1.001
        mp.set_property_number("speed", speed)
        if speed>lastmsg+0.01 then
                -- print("Accelerated by "..((speed-1)*100))
                mp.osd_message(string.format('%d%%',(speed-1)*100))
                lastmsg=lastmsg+0.01
        end
        -- speed=mp.get_property("speed")
        -- print("To "..speed)
end
function start_accelerate()
        mp.osd_message("Acceleration started!")
        mp.set_property_bool("audio-pitch-correction", true)
        mp.set_property("framedrop", "vo")
        local timer=mp.add_periodic_timer(3, do_accelerate)
end
mp.add_key_binding(nil, "start-accelerate", start_accelerate)