FFmpeg, x265 and slower encoding on faster PC
freebsd01 at dgmm.net
Sun Sep 24 19:05:10 UTC 2017
Before I head off into diags land and asking elsewhere, has anyone
seen any weirdnes with x265 encoding speeds FFmpeg on FreeBSD?
The specific weirdness isn't just slow encoding, that's expected in
comparison to, eg x264. The specific weirdness is my 6 core
AMD Phenom II 3.3GHz based PC is encoding significantly slower
than my 2 core Intel i5 @2.6GHz (4 with hyperthreading).
I'm wondering if either AMD is not as well supported or the
Phemon II is just so old it doesn't have the right support.
Encoding with X264 is far faster on the AMD the Intell box.
CPU: AMD Phenom(tm) II X6 1100T Processor (3311.05-MHz K8-class CPU)
real memory = 8589934592 (8192 MB)
nvidia0: <GeForce 8400GS> on vgapci0
FreeBSD amd.asgard.uk 10.3-RELEASE-p20 FreeBSD 10.3-RELEASE-p20 #0: Wed Jul 12 03:13:07 UTC 2017 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
CPU: Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz (2675.02-MHz K8-class CPU)
real memory = 4294967296 (4096 MB)
nvidia0: <GeForce 9500 GT> on vgapci0
FreeBSD testbox.asgard.uk 10.3-RELEASE-p20 FreeBSD 10.3-RELEASE-p20 #0: Wed Jul 12 03:13:07 UTC 2017 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
Built with default options.
I've tried swapping the video cards over to see if FFMPeG or the x265 library was using h/w acceleration.
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