On Sun, Oct 11, 2015 at 00:29:25 +0200, James Darnley wrote: > > And you wonder why it's slow. You're on x86-64. You at least have SSE2 > instructions. Why are you not using them? You have to explicitly > disable assembly when building x264 to get "none".
Actually, in my experience, while ffmpeg configure fails when not finding an appropriate assembler, x264 would just "silently" compile without assembly. This was the case for me when my yasm was too old for x264 to be used. But checking current x264's configure script, it should actually error out. That said, not only is Joseph's ffmpeg quite old, so is the x264 version that ffmpeg uses: core 138. So I'm guessing that's what happened, but bad work of a repo to let that slip through! The performance of my x264 build increased by about a factor of 5 (!) as soon as I had built it with assembly. There you go, better than buying a new server farm. :-) Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
