To install the codec follow the steps bellow :
1 - Download m3jpegV3.exe here (if not yet done).
2 - Run m3jpegV3.exe :
3 - Read the License Agreement. Click on [ I Agree ] :
4 - Click on [ Next > ] :
5 - Click on [ Install ] :
6 - Wait while installation is performing then click on [ Close ] :
The codec is installed, the Quick Config icon appears in the tray bar :