Minimum CPU arch: none, SSSE3, AVX and AVX2 is for C++ compile option – x265 source code is divided into C++ and asm parts. Asm code determine CPU type at runtime, C++ code needs information about CPU type at compile time. It means that if you have CPU with AVX extension, you can use all binaries except AVX2 (which hangs at encoding on AVX-CPU). You can determine your CPU arch by executing x265 wi