-http://ffmpeg.org/releases/ffmpeg-3.3.tar.bz2
-https://chromium.googlesource.com/webm/libvpx/+archive/0c0a05046db1c0b59a7fcc29785a190fdbbe39c2.tar.gz = 1,6,1
+http://ffmpeg.org/releases/ffmpeg-4.0.tar.bz2
+https://github.com/webmproject/libvpx/releases/tag/v1.7.0
+https://github.com/swh/ladspa/releases/tag/v0.4.17, plugin.org.uk
+https://archive.mozilla.org/pub/opus/opus-1.2.1.tar.gz