FFmpeg 3.3.1 is now the latest stable and most advanced release in the “Hilbert” series, which was cut from the master branch in very early April 2017. It contains the libavutil 55.58.100, libavcodec 57.89.100, libavformat 57.71.100, libavdevice 57.6.100, libavfilter 6.82.100, libavresample 3.5.0, libswscale 4.6.100, libswresample 2.7.100, and libpostproc 54.4.100 updated libraries. Looking at the changelog, we can’t help but notice that there are about 24 bug fixes included in the FFmpeg 3.3.1 maintenance update, which should improve various components like the AC3 audio and MPEG-4 video decoders, WebP and Opus support, FLAC decoder, MVC support, DDS decoder, and AAC encoder, among many others, so we recommend updating as soon as possible.