i encoded one 10bit/444 video, it seems to work fine...

but of course better testing will be very useful) 

it seems i can't attach repacked sources due to very slow internet /

just put content of x264 git cloned folder into x264-snapshot-20210615 and tar it, and then xz it too.... 

$ git clone https://code.videolan.org/videolan/x264.git

$ mkdir x264-snapshot-20210615-master

cp -ar x264/* x264-snapshot-20210615-master/

tar -cf x264-snapshot-20210615.tar x264-snapshot-20210615-master

xz - 9 x264-snapshot-20210615-master.tar