x264 is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC compression format, and is released under the terms of the GNU GPL.
Extracted automatically from X264 homepage
brew install x264
The following dependency will be installed if you install X264:
This formula is required by Libav, GstPluginsUgly, Ffmbc, and 2 other formulas.