I am trying to install Magix Video Saver but without success. With picture there are no problem but I can' t save the voice. I have Windows 10. What is the problem?
Assuming you mean that when you try to capture a video using the USB capture device check the Windows Settings, Privacy, Microphone options are set to allow desktop apps to access the microphone.
If this does not work then we need more information:
the program version number
the capture device make/model/colour you are using