Difference between x86_64 and x86_64-v3
x86_64-v3 build have these instructions enabled by default:
avx avx2 bmi bmi2 fma lzcnt movbe sse3 sse4 sse4.1 sse4.2 ssse3 xsave sahf mwait crc32 cx16 popcnt f16c
Cpu which dont have these features will fail to launch the x86_64-v3 build
https://sourceforge.net/projects/mpv-player-windows/files/64bit-v3/#readme