x264 - staxrip/staxrip GitHub Wiki
StaxRip uses x264 builds modified by DJATOM and Patman, but generally also supports unmodified original x264 builds.
x264 Patman Mod
Website: https://github.com/Patman86/x264-Mod-by-Patman
Download: https://www.mediafire.com/folder/vkt2ckzjvt0qf/StaxRip_Tools
x264 DJATOM Mod
Website: https://github.com/DJATOM/x264-aMod
Download: https://github.com/DJATOM/x264-aMod/releases