Download VLC and install it on your computer
Open its MENU: Media > Open Capture Device...
Capture Device tab:
- Click the Advanced options (next copyscreens)
Advanced options window (if needed to change some values like the Picture aspect-ratio, etc...) and enable the "Device properties" (to open the next copyscreens):
* Device properties (1rst window):
* Device properties (2nd window), choose an appropriate Compression format (Color Space / Compression) and resolution (Output Size):