KONA LHe and FCP audio/video sync problem

[Bob Zelin]

1 or 2 seconds is not 4 frames. How are you monitoring your audio. You CANNOT monitor your audio on the internal MAC G5 speaker. You MUST monitor your audio from the output of your Kona LHe card. Are you doing this ?

Bob Zelin

[Kozo Okumura]

Yes, I am monitoring frm KONA audio output. if it is a few frame off, I would check the audio output setting. but I am talking about 1 or 2 seconds, which is odd.

Kozo

[Bob Zelin]

If you are off 1 or 2 seconds, something is very wrong. I would uninstall and reinstall the AJA drivers, and if you have the same problem, I would call AJA tech support.

Please tell me the VTR that you are digitizing from .

Bob Zelin

[Kozo Okumura]

This is not digitizing issue. it is play back issue. It seems like it is playing slower so that the longer you play them more off sync you get with audio. I am playing back DV footage using 525 29.97kzh 8 bit to the monitor. And I notice that if I use 10 bit, the it is even worse.

Kozo

[Vince Gaffney]

were you able to solve this? I have spent the entire day trying to get my audio to sync.

thanks,

vince

[Riccardo Mazza]

Hello Vince,

I had the same problem. Partially solved moving Kona on slot 4 of my macpro pre 2008 and setting slot utility to 8x on slot 4. But I still have out of sync audio and video when getting video in from analog source and also I have interferences (green flashes) on the external monitor only when capturing. It looks like a clock problem. We also changed the Kona because we tought it was broken but the problem is the same.

Riccardo Mazza

[Olwin Pangaribuan]

Hello Riccardo,

I read all post but i didn’t find the way to solve my problem I got.
The problem is, I have 9 editing suites with FCP 6.05 on Mac Pro with Aja Kona LHe. Some time, when I play the timeline, the audio wil go out of sync from video, it looks like the audio file is playing slower than the video file so the longger i play the timeline more duration of delay audio from video. It happen intermitten, and all suite ever faced the problem.
Some time but rare, shut down the machine will automaticly fix the problem.
I also have another suite with the same version FCP and the same Mac Pro tech spec but use Decklink HDExtreme3 as Video/Audio I/O card. Use this cheaper card but never face this problem 🙁

Help me please..

Olwin