[packman] Problems with OBS Studio on TW

[kocelfc at tutanota.com]

Hey, there are some issues with OBS, I am running Gnome wayland. First of all, when I installed obs-studio, it couldn't be started at all due to some qt wayland plugin missing, which made me install qt5-wayland manually. Second, the program crashes before starting properly: "Failed to create aac streaming encoder (simple output)". 
A few relevant or irrelevant lines I found when starting it from the terminal include:

error: os_dlopen(/usr//lib64/obs-plugins/obs-ffmpeg.so->/usr//lib64/obs-plugins/obs-ffmpeg.so): libavdevice.so.59: cannot open shared object file: No such file or directory

warning: Module '/usr//lib64/obs-plugins/obs-ffmpeg.so' not loaded
error: os_dlopen(/usr//lib64/obs-plugins/obs-filters.so->/usr//lib64/obs-plugins/obs-filters.so): libspeexdsp.so.1: cannot open shared object file: No such file or directory
error: Failed to get properties for encoder '' (ffmpeg_aac)
error: Could not enumerate any AAC encoder bitrates
error: Failed to create aac streaming encoder (simple output)