How to Enable hiDPI Scaling?

[somedude007]

How do I enable hiDPI scaling so that VLC's interface is larger (images/texts/etc.) so that it looks better on my 4K monitor?

[chubinou]

Hi,

Hi-DPI is activated, you are probably using a fractional scaling (150% ?). the framework we use for the interface doesn't handle properly fractional scaling, We had many complains about huge button at 150% so we modify the behavior to prefer smaller button. There isn't much we can do about.
You might be able to change the behavior through environment variable (you may try to set QT_AUTO_SCREEN_SCALE_FACTOR=0 and QT_SCREEN_SCALE_FACTORS=2), but this might affect other Qt applications.

[fidelisoris]

(you may try to set QT_AUTO_SCREEN_SCALE_FACTOR=0 and QT_SCREEN_SCALE_FACTORS=2), but this might affect other Qt applications.

I know this is a bit of a necro post, but I wanted to say thank you for giving these out, I set my QT_SCREEN_SCALE_FACTORS=3 and now I can finally use VLC on my high DPI touchscreen Microsoft Surface Pro tablet.

It's really frustrating to try and use the lower buttons and especially the time bar to seek into videos with a finger on a high DPI tablet (even under Windows 11). I would really think it would be massively beneficial to have some sort of scaling factor option in the standard interface options, or some sort of option to enlarge the time bar at a minimum