If you use the software OBS Studio for your video broadcasts, you need to capture the MB STUDIO VIDEO video window. To do this in OBS Studio here are the instructions
1) install the latest version of OBS STUDIO, so with the previous versions the capture from VIDEO MB STUDIO does not take place correctly
2) let's add a new window source
3) select the VIDEO MB STUDIO window and choose the acquisition method: "Windows 10"
4) finally we set the size of the video output to the same size as the MB STUDIO VIDEO window