- $ wget -nv http://download.sourceforge.net/project/libusb/libusb-1.0/libusb-1.0.18/libusb-1.0.18-win.7z
- $ 7z -olibusb-1.0.18-win x libusb-1.0.18-win.7z
- $ wget -nv http://win32.libav.org/releases/libav-9.13-win32.7z
- $ 7z -olibav-9.13-win32 x libav-9.13-win32.7z
+ $ wget -nv https://github.com/libusb/libusb/releases/download/v1.0.21/libusb-1.0.21.7z
+ $ 7z -olibusb-1.0.21 x libusb-1.0.21.7z
+ $ wget -nv https://ffmpeg.zeranoe.com/builds/win32/dev/ffmpeg-3.4.2-win32-dev.zip
+ $ unzip ffmpeg-3.4.2-win32-dev.zip