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Activity Forums Avid Media Composer Multi-core encoding in Avid

  • Multi-core encoding in Avid

    Posted by Grayson Sedory on May 11, 2009 at 6:20 pm

    I’m having an issue I’m not sure if its a setting that I’m missing or if avid just doesn’t use multi-cores while encoding but I’m trying to encode a 10 min 720P project into H.264 and its taking pretty long. However, I see that Avid is only using 25% of total CPU power…is there any way to increase this so it uses closer to 100%?

    Running: Mac Pro 10.5 – Avid Express Pro – Quad Core 3.0Ghz – 4Ghz Ram – 8800Gt 512MB.

    Thanks

    Terence Curren replied 16 years, 11 months ago 4 Members · 5 Replies
  • 5 Replies
  • John Kennedy

    May 12, 2009 at 1:50 pm

    You have discovered the crux of multiprocessor computing…

    If you have one process that generates one thread, then it will tax only one processor with that one thread to finish that one process.

    You have to have applications that are capable of multithreading in order to tax all the processors, or be able to run multiple threads at the same time and assign the tasks to any of the available idle processors.

    As we see newer operating systems
    and applications take better advantage of the hardware available, you will see less idle processor time and better performance throughput from multiprocessor machines (and I’m not just talking about being able to write an email while burning a DVD and rendering a Flash movie in the background).

    It will take a shift in programming before we all feel the advantage of multiprocessor machines, but once this starts to happen, there will be a palpable difference in performance, rather than the lackluster 25% utilization you are seeing now on a quadcore system.

    Here is a link to the avid community where someone was wondering the same thing .. https://community.avid.com/forums/t/63665.aspx

    Avid Adreneline – MC 3.1
    Avid Nitrous – Symphony
    Avid Mojo – MC 3.0.1
    Final Cut Pro 6.0.3

  • Dino

    May 12, 2009 at 11:43 pm

    Further, exporting to QuickTime is not really an Avid function. It’s just throwing hooks into QuickTime. You will get much better performance using a dedicated encoding application.

    Multiprocessing and Multithreading has a long way to go on most apps. My first sit-down with a 3.X Symphony I went straight for the effect which has been historically cripplingly slow, Pan and Zoom. Set up my timeline, loaded in a still, set up a move, hit render, and, molasses. Opened Activity Viewer, one CPU pumping, seven just sitting as still as the progress bar.

    We’re not there yet.

  • Grayson Sedory

    May 12, 2009 at 11:49 pm

    What program would you recommend for encoding with multiple processors?

  • Dino

    May 13, 2009 at 12:19 am

    I can’t speak to the specific multiprocessor ability of any of these but a dedicated encoding program will give you a better result in less time.

    Episode
    https://www.telestream.net/episode/overview.htm

    or Squeeze
    https://www.sorensonmedia.com/video-encoding/

    are good things.

  • Terence Curren

    May 13, 2009 at 5:33 pm

    You should get Squeeze free with your MC package.

    Export a reference movie from MC, this is fast after your timeline is rendered, then take it to Squeeze to encode.

    Terence Curren
    http://www.alphadogs.tv
    http://www.digitalservicestation.com
    Burbank,Ca

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