Hi
just sharing so it can help others (and maybe for the readme)
Here's what it takes to build and install on Raspberry Pis running 64 Bits RaspiOS for Desktop (Trixie)
sudo apt install g++ meson libavutil-dev libavcodec-dev libavformat-dev libswscale-dev libpulse-dev cmake libwayland-dev wayland-protocols libavfilter-dev libgbm-dev libdrm-dev libavdevice-dev libpipewire-0.3-dev
Now you should be able to build and install without warnings or missing features
Been using it for the last few days. No issues...
Have fun screencasting !