Latest post Tue, Oct 12 2010 6:58 PM by hbrock. 3 replies.
Page 1 of 1 (4 items)
Sort Posts: Previous Next
  • Tue, Oct 12 2010 10:12 AM

    Matrox MXO2 mini weird audio sync problem

    Hello there,

    I've just started working on a system with a Matrox MXO2 mini setup.

    I just found out that the sync isn't stable when I compare the image from the MXO output to the avid record monitor. Sometimes it plays in perfect sync and sometimes it seems to be 1 or 2 frames late on the avid record monitor. First I didn't believe what I was seeing because I was looking at "normal" film footage and I thought my eyes were getting tired. But then I decided to build a "sync prove" sequence. Where I put 1 frame of white on top of 1 frame of 1000 Hz tone and repeated this every 2 seconds. When I did this it was obvious that every 3rd to 4th time I would hit start/stop the avid record monitor would be 1-2 frames late...

    Really weird!

    Has anyone else experienced this / can anyone reproduce this weird behavior?

    Or maybe somebody knows the secret little switch to make this phenomenon go away?

    I cant wait to hear from you.

    Best Regards



    Per Sandholt - Editor
    +45   20 82 49 48

  • Tue, Oct 12 2010 10:53 AM In reply to

    • mjolnarn
    • Top 10 Contributor
    • Joined on Wed, Feb 8 2006
    • Sweden
    • Posts 13,346
    • Points 160,330

    Re: Matrox MXO2 mini weird audio sync problem

    Hi Per, if I remember correct, 10,6,4 is the certified OS for this.

    Also, what are the version of the MM drivers that you are using, the certified ones is 1,92 if I remember correct, it all should be into the Readme

    Mac: 17" Macbook Pro i7 2,66 ghz with 8Gb Ram, 500gb 7200rpm drive___ PC_NEW Win10 Pro Mbo Asus Rampage IV Black CPU Ivy Bridge-E 4960X ( = 12 x 4... [view my complete system specs]



  • Tue, Oct 12 2010 2:47 PM In reply to

    • Marty
    • Top 150 Contributor
    • Joined on Sat, Dec 3 2005
    • Berlin, Germany
    • Posts 971
    • Points 11,460

    Re: Matrox MXO2 mini weird audio sync problem

    And maybe it could be also the lcd monitor ? Do you use HDMI at 1920x1080 native pixels?

    all different setups in various editing suites. my own: MC 2021.9, OSX 10.14.6, iMac (Retina 5K, 27-inch, 2019), 3,6 GHz Intel Core i9, 64GB RAM, Radeon... [view my complete system specs]

  • Tue, Oct 12 2010 6:58 PM In reply to

    • hbrock
    • Top 25 Contributor
    • Joined on Thu, Oct 13 2005
    • Bainbridge Island, WA
    • Posts 5,569
    • Points 64,855
    • Moderator: Avid Xpress Pro Mac
      Moderator: MCA Mac
      Moderator: Media Composer Getting Started

    Re: Matrox MXO2 mini weird audio sync problem

    I did some testing and found it to be consistent, but my LCD monitor adds 2 frames of delay and the only way to ensure sync is to take the HDMI decoded audio outs from the monitor that includes the monitor delay.

    MacPro, MacBook Pro and a Cube (masquerading as a kleenex dispenser). [view my complete system specs]

    Must think of something clever to go here...

Page 1 of 1 (4 items)

© Copyright 2011 Avid Technology, Inc.  Terms of Use |  Privacy Policy |  Site Map |  Find a Reseller