x264 Encoding with MeGUI on 32 Cores System

[defalopii]

How about if using more ports, 16, 32, 64 etc ??
Just in case if 8 ports still not be able to maximize the existing core

[Atak_Snajpera]

I doubt that eight instances of x264 encoder in second pass won't be able to saturate all 32 cores. Besides with one x264 running you got 30% in MeGUI. 4 instances will easily saturate your server at 100%.

[defalopii]

i am sure if user will happy if they can maximize the CPU usage to boost speed in the 1st pass

[Atak_Snajpera]

i am sure if user will happy if they can maximize the CPU usage to boost speed in the 1st pass

so you are saying that 8 encoders can't use all 32 cores in first pass?


Besides most people use CRF these days instead of 2-pass. (no need to store movies on CD/DVD when we have big portable HDDs)

[Keiyakusha]

1st pass in 2-pass encode is not efficient when it comes to multithreading. Never was, unless sometime recently DS rewrote it and magically optimized all that can and can not be optimized. If you managed to get 100% load on all your cores in 1st pass - maybe this is because all extra power wasted on something else, like on running your virtual machines. You should make sure that second pass or CRF uses 100% cpu. If you have that - don't expect more.

[Dark Shikari]

Originally Posted by Keiyakusha

1st pass in 2-pass encode is not efficient when it comes to multithreading. Never was, unless sometime recently DS rewrote it

lookahead-threads (though the auto isn't tuned for multipass yet, you can set it manually).

[defalopii]

Originally Posted by Atak_Snajpera

so you are saying that 8 encoders can't use all 32 cores in first pass?

Besides most people use CRF these days instead of 2-pass. (no need to store movies on CD/DVD when we have big portable HDDs)

Yes, 8 encoders still cant utilize the all CPU in the 1st pass, i am sure about that

Maybe i am still in old era, bcoz still using 2-pass

[Groucho2004]

Originally Posted by defalopii

Maybe i am still in old era, bcoz still using 2-pass

There is nothing wrong or antiquated about 2 pass encoding. If you have to hit a certain target size, that's what you have to do.

Some people just think that their opinion should be the measure of all things.

[Atak_Snajpera]

2pass is only usefull if you aiming for certain size .for example you want to use all available space on cd dvd bd ... if you store movies on hdd then you should use crf. in cq mode x264 will better determine how much bitrate is needed for specific source. anime requires alot less bitrate than most of movies for example. i don't care whether you agree or not. that's the fact. period.

[Groucho2004]

Originally Posted by Atak_Snajpera

2pass is only usefull if you aiming for certain size .for example you want to use all available space on cd dvd bd

I believe I just made that point but thanks for the refresh.

Originally Posted by Atak_Snajpera

i don't care whether you agree or not.

Nor should you.