The VideoLAN Forums

I bought 3990x cpu 64 cores 128 threads but can't x264 placebo stream. This is stream pc.
I asked https://obsproject.com/forum/threads/i- ... nt.159170/ here.
'x264 stops scaling at around 20 cores for 1080p, also the higher the used threads go the worse gets the compression.' is this real?
So can't it be a CPU with more than 20 cores?
x264 stream maximum setting is slow?

I've found this info:
https://forum.videohelp.com/threads/384 ... es-threads
https://blog.otterbro.com/x264-threads-we-gotta-talk/
http://forum.doom9.org/showthread.php?p ... ost1646307
http://forum.doom9.org/showthread.php?t=173277

x264 stream maximum setting is slow?

Yes it is. The higher preset setting the slower speed. That plus some other settings like the number of B-frames, ME, subME, etc.

can't? any can stream setting(s)? slower, very slow, placebo stream is overload. I tested therads=1, therads=0, therads= 128, therads= 64 and therads=16 but all overload.

TBH I don't know much about the cores and threads usage of x264.
You should get some advanced help in this forum:
https://forum.doom9.org/forumdisplay.php?f=77

Or on IRC:
Server: irc.libera.chat
Channel: #x264
Or channel: #x264dev