1=== 2FAQ 3=== 4 5Scaling issues with Wayland 6=========================== 7 8If you encounter wrong scaling of PDFs within the presenter and presentation 9window, you can try the:: 10 11 --wayland-workaround 12 13flag. See issues #312 and #214 for more information. 14 15Video playback is not working 16============================= 17 18You likely have a ``gstreamer`` codec issue. In particular, 19pdfpc uses the "gtksink" ``gstreamer`` plugin. On modern Debian-based systems, 20it is part of the ``gstreamer1.0-gtk3`` package; install it with:: 21 22 sudo apt-get install gstreamer1.0-gtk3 23 24On Arch Linux and derived (e.g., Manjaro) distributions, install it with:: 25 26 sudo pacman -S gst-plugin-gtk 27 28Try loading the video file you want to play with the following command: 29``gst-play-1.0 --videosink gtksink <your video>`` (if ``gst-play-1.0`` is not 30found, you may need to install a package that provides it, e.g., 31``gstreamer1.0-plugins-base-apps``). 32If the video plays with no errors or warnings, go ahead and `submit an issue 33<https://github.com/pdfpc/pdfpc/issues>`_. Otherwise, the command will likely 34output some good hints for why gstreamer cannot decode the video. 35 36Windows do not appear on the correct screen 37=========================================== 38 39For tiling window managers, the movement and fullscreening of the windows do not 40work reliably. It is therefore important to tell your WM to force floating the 41pdfpc windows. 42 43If you are using i3-wm add this to your config file:: 44 45 for_window [ title="^pdfpc - present" ] border none floating enable 46 47