I am trying to push my server's CPU cores to the max, but no success.
Encoding 2-pass style, set my "-threads" to 128 . When running 2nd pass , the CPU seems to be at 98% usage, but first pass run totally ignores "-threads" option.
Using libx264 . Here is my preset:
flags=+loop+mv4 cmp=256 partitions=+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 me_method=hex subq=7 trellis=1 refs=5 bf=3 flags2=+bpyramid+wpred+mixed_refs+dct8x8 coder=1 me_range=16 g=250 keyint_min=25 sc_threshold=40 i_qfactor=0.71 qmin=10 qmax=51 qdiff=4
Is there any reason why the 1st pass is not utilizing my CPUs ?
Thank you in advance! This community has always been very kind to me.