The VideoLAN Forums

I found the problem I think... but I'm not sure how you properly fix it. It's related to QT automatic DPI scaling for people who have HiDPI displays like us. You can workaround the issue with the following environment variable. QT_AUTO_SCREEN_SCALE_FACTOR=0 vlc <file> The only downside is that all t...

I just wanted to comment that I'm seeing this exact same issue on Fedora 25 using Xorg and package vlc-3.0.0-15.20161221git634cd2e.fc25.x86_64 (from negativo17.org). Even when playing a 4k video (big buck bunny) the video appears to be displayed as if the display was 1080p. I'm not sure how your wou...