[Libav-user] change in x265 library??

James Hale james at thehales.id.au
Mon Dec 18 03:28:45 EET 2017

Yes, I think that must be it.

While writing a reply to the previous poster (I use the GUI iFFMpeg) I thought I would examine the output from the last working build (end of Nov) with one of the blow out builds.

in the log output for the good (Nov) build I have...
x265 [info]: HEVC encoder version 2.6+2-32e6f04b8713
x265 [info]: build info [Mac OS X][clang 8.0.0][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2

Whereas in the post DEC builds (which blow out in time) I have....
x265 [info]: HEVC encoder version 2.6+14-f09f3b4a2115
x265 [info]: build info [Mac OS X][clang 8.0.0][64 bit][noasm] 10bit
x265 [info]: using cpu capabilities: none!

Which I guess would explain the slower times and also why the builds are smaller.

Guess I will need to wait until the HW acceleration is enabled again.

> On 18 Dec 2017, at 12:14 pm, Christopher Snowhill <kode54 at gmail.com> wrote:
>> On Dec 17, 2017, at 4:46 PM, James Hale <james at thehales.id.au> wrote:
>> I have been using snapshot builds for the Mac of ffmpeg for the last year and have noticed a dramatic change since build 89381 (from the beginning of Dec.) I don't make the builds myself but obtain them from evermeet.cx and the developer there tells me there has been no change in his build process which sort of eliminates this from the issue.
> They do not appear to be using --enable-hwaccels, if that's relevant. They may also be building without yasm installed, so a lot of assembly code may also be missing.
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