- $ wget -nv http://sourceforge.net/projects/libusbx/files/releases/1.0.11/Windows/libusbx-1.0.11-win.7z
- $ 7z -olibusbx-1.0.11-win x libusbx-1.0.11-win.7z
- $ wget -nv http://win32.libav.org/win32/libav-win32-20120521.7z
- $ 7z x libav-win32-20120521.7z
+ $ 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