This directory (app/deps/) contains:

*.sh          : shell scripts to download and build dependencies

patches/      : patches to fix dependencies (used by scripts)

work/sources/ : downloaded tarballs and extracted folders
                    ffmpeg-6.1.1.tar.xz
                    ffmpeg-6.1.1/
                    libusb-1.0.27.tar.gz
                    libusb-1.0.27/
                    ...
work/build/   : build dirs for each dependency/version/architecture
                    ffmpeg-6.1.1/win32/
                    ffmpeg-6.1.1/win64/
                    libusb-1.0.27/win32/
                    libusb-1.0.27/win64/
                    ...
work/install/ : install dirs for each architexture
                    win32/bin/
                    win32/include/
                    win32/lib/
                    win32/share/
                    win64/bin/
                    win64/include/
                    win64/lib/
                    win64/share/