https://blog.faceutil.com/2020/04/21/%ec%8a%a4%ec%b9%b4%ec%9d%b4%eb%94%94%ec%a7%80%ed%83%88-sky-dv-mini-%ec%b9%b4%eb%a9%94%eb%9d%bc-%eb%a0%88%ec%bd%94%eb%8d%94-%eb%93%9c%eb%9d%bc%ec%9d%b4%eb%b2%84-skydigital-sky-dv-mini-camera-recorder/