So far no success for me running the avx512 option on my 7820x on Windows 10 64it. I tried
Code:
ffmpeg -i source.mkv -f yuv4mpegpipe - | x265.exe --preset slow --asm avx512 --crf 21 --y4m - -o dest.h265
which crashes immediately. Using --asm avx2 works fine.
I ran
Code:
x265.exe -V && x265.exe --asm avx2 -V && x265.exe --asm avx512 -V
and it showed
Code:
x265 [info]: HEVC encoder version 2.7+340-aa9102400f24
x265 [info]: build info [Windows][MSVC 1900][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: HEVC encoder version 2.7+340-aa9102400f24
x265 [info]: build info [Windows][MSVC 1900][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: HEVC encoder version 2.7+340-aa9102400f24
x265 [info]: build info [Windows][MSVC 1900][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
Quote:
Originally Posted by Ma
You can test file avx512-patch.7z with x265 that check what is supported by CPU & OS up to avx512 if option '--asm avx512' is used. |
I tried from that package x265.exe, x265-1.exe and x265-2.exe. All of them crashed immediately. I am using the latest nightly version of ffmpeg.
Am I missing something?