If checked, the mouse pointer will disappear during slideshows.
If checked, the videos will not output sound.
This option run an external video player using full hardware acceleration. On OS XS (Raspberry Pi) this allows maximun video resolution of 1080p (video can't be stopped during playing),(Some HD videos might require more GPU memory to work properly and prevent a black screen). On PC, this option launche by default MPlayer and require adding acceleration software package. Other command line base hardware accelerators can be configured to accomodate other graphic cards.
Use an external web browser in order to have the maximum compatibility possible. The external web browser has to be configured in full screen.