[Libav-user] x265 HVEC much slower on AMD than Intel

[Carl Eugen Hoyos]

2017-10-10 23:06 GMT+02:00 Dave <ffmpeg at dgmm.net>:

> The most obvious difference when running ffmpeg are the following lines
> On Intel box
> x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
>
> On AMD box
> x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT

This indicates that the Intel cpu can at least be much more efficient
and that higher throughput is no surprise.

Carl Eugen