It looks like your ac fan blower is vibrating .. it could be due to chocked vents or a loose blower ... secondly there is a thermostat adjustment behind the glove box turn it full clockwise, a lower setting tends to trip the compressor earlier ... lastly the gas pressure lo or hi can cause less cooling or freezing in ducts with same results .. the problem is in any of these areas .. my guess is u have chocked vents the ones inside the car under the dash ....