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O
Optoo
Participant
May 12, 2017
Question

Media Encoder render CPU core usage

  • May 12, 2017
  • 1 reply
  • 6350 views

Hi,

I read many posts on this forum in Media Encoder CPU usage (50% instead of 100% for exemple), but I never read about optimisation.

So, I got two questions :

  1. What is the maximum number of CPU cores that Media Encoder supports ?
  2. If I have to do two equivalents renders, what is it the best :
    • make my renders one after the other in a 20 CPU cores
    • make my renders alongside on two 10 CPU cores

Tell me if you need more informations

Thanks !

    This topic has been closed for replies.

    1 reply

    O
    OptooAuthor
    Participant
    May 22, 2017

    I made some render test on different servers.

    For a 3 minutes video with 2 quick fast-forward and contrast / level / luminosity filters.

    On server with 18 CPU Cores :

    - render with After Effects (through x264 encoder) : 18 min

    - render with Media Encoder Youtube 1080 preset : 25 min

    On server with 8 CPU Cores :

    - render with After Effects (through x264 encoder) : 19min40

    - render with Media Encoder Youtube 1080 preset : 28min30

    On server with 4 CPU Cores :

    - render with After Effects (through x264 encoder) : 20min20

    - render with Media Encoder Youtube 1080 preset : 44min

    CPU usage during tests :

    - 18 CPU : all cores at ~18%

    - 8 CPU : all cores at ~30%

    - 4 CPU : all cores at ~55%

    My question : how can I improve render time ?

    Thanks

    K
    KlokwerksVideo
    Inspiring
    October 4, 2017

    We just tested a transcode from Phantom4 Pro 4k H264 to Cineform 4k on 3 different machines in the office. 4790k 4c/8t 4ghz was the fastest. 8c/16t 3.6ghz  Ryzen 1800x next fastest. Xeon 24c/56t 2.2ghz slowest. What?! How do we get AME (Adobe Media Encoder) to use all available resources so we can offload transcoding to the most powerful machine? We are looking to invest in a dual AMD 7401 server for 3D rendering and I was hoping to use it to transcode also. With 96 threads it should blow through this, but our finding is that AME prefers clock speed over cores. Any thoughts or help appreciated. Willing to use alternative software as long as we can still use Cineform.

    Interestingly, on the 56 thread machine, the cpu usage on the shamefully low 12 threads it was using, was only about 30% utilization.

      C
      CR3_
      Participating Frequently
      May 7, 2018

      Did you find a solution for this, I’m just looking at this exact problem rendering out 4K footage and getting different opinions on what to buy?  I have been looking at a Z840 36core machine for rendering but your saying this isn’t the best option? 

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