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Activity Forums AJA Video Systems Strobby playback on LHe

  • Strobby playback on LHe

    Posted by Melvin Chong on October 8, 2006 at 2:49 am

    Hi,

    My problem is that the video overlay in FCP and broadcast monitor don’t sync. There’s a strobby playback on the broadcast monitor that lags a few seconds behind that on the FCP overlay.

    Anyone any clue ?

    Cheers !

    Specs:
    MacPro with OS 10.4.8
    Kona LHe with 3.1 driver
    Quicktime 7.1.3
    FCP 5.1.2
    4Gb ram
    250Gb system drive
    1.5Tb video drive (500mb x 3 raid-0)

    Melvin Chong replied 19 years, 7 months ago 2 Members · 5 Replies
  • 5 Replies
  • Jeremy Garchow

    October 9, 2006 at 5:04 pm

    Sounds to me like you are dropping frames, which could be a host of problems of which off the top of my head would be that your sequence settings don’t match your media and you are trying to play a real time preview, but that’s just a hunch. Go in to your user preferences and make sure the dropped frames on playback is turned ON. Then play your sequence and tell me if a warning comes up.

    Also, go into your system settings preferences and click on the playback control tab. Change the frame offset from the default (which I think is 4) to 0.

    Jeremy

  • Melvin Chong

    October 9, 2006 at 11:11 pm

    Hi Jeremy,

    I don’t think it is dropping frames cos the playback on the FCP overlay is not jerky at all. The drop-frame message did not pop up .

    I have installed several Kona cards before and this is the 1st time I’m seeing this.

    Cheers !

  • Jeremy Garchow

    October 9, 2006 at 11:21 pm

    Okay, run the AJA system test on your RAID and tell me the performance you are getting. Are you running this array off of the internal Mac SATA or do you have a SATA card? Have you installed several Kona cards on a MacPro?

    Jeremy

  • Jeremy Garchow

    October 10, 2006 at 12:33 am

    Make sure you download/imstall this firmware upgrade:

    https://www.apple.com/support/downloads/macproefifirmwareupdate10.html

    Jeremy

  • Melvin Chong

    October 10, 2006 at 2:25 am

    Hi, Jeremy

    It’s a faulty card.

    Cheers !

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