• AJA Video Systems

  leopard latency & the IoHD…

  Posted by E. Eric johnson iii on January 22, 2008 at 7:31 am

  I was wondering what frame offset people are using now the leopard drivers are out. My IoLA was at 4 frames for my old G5 dual 2.5 & 5 for my PowerBook G4; however, with the IoHD on my new machines (mac pro 8-core & MBP) nothing looks in sync?!?

  I have looked at everything from 0 frames to as high as 7… Maybe I’ve tried so many options my perception is gone. Regardless, if you’re running an IoHD with leopard, what’s working for you?

  Thank you & glory to the cow.

  Eric

  e. eric johnson iii
  er**@*********er.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in principal photography – START 2 FINISH: What It Really Takes to Race A Bike

  E. Eric johnson iii replied 18 years, 3 months ago 6 Members · 19 Replies
• 19 Replies

• 

  Jeremy Garchow

  January 22, 2008 at 7:58 pm

  I run mine @ 2, but I am still on tiger.

  Jeremy
• 

  E. Eric johnson iii

  January 22, 2008 at 8:25 pm

  thank you jeremy… my machines had leopard already loaded when they arived and i’m hoping to avoid loading tiger.

  i’ll hang in a little longer – maybe a leopard user will chime in.

  again, thank you.

  -eric

  e. eric johnson iii
  eric@lillmonster.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in principal photography – START 2 FINISH: What It Really Takes to Race A Bike
• 

  Jeremy Garchow

  January 22, 2008 at 8:35 pm

  Did you try a negative number such as -2?
• 

  E. Eric johnson iii

  January 22, 2008 at 8:38 pm

  actually no, i haven’t done that. i’ll give it a try.

  thank you… again,

  -eric

  e. eric johnson iii
  eric@lillmonster.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in post production – START 2 FINISH: What It Really Takes to Race A Bike
• 

  Carsten Orlt

  January 22, 2008 at 9:28 pm

  I’m working in Leopard on a MacBook Pro 15′ 2.33.

  I’m not sure I understand your question because if you monitor video AND audio out of your ioHD everything should be in sync regardless of your playback offset in FCP. All the playback offset does is to synchronize the canvas to the external monitor. Mine is 5.
  Are you looking at your canvas and listen to your ioHD audio outs or are you only looking at your external monitor for video and audio. If your doing the later and the footage is out of sync then it has nothing to do with the latency of the firewire device.
  I did get caught thinking the ioHD has a problem with sync when I first time worked with Varicam footage shot at 25p over 60p. Everything was out by 2 frames. Jeremy here told me then this is normal too for 24p over 60p footage. So nothing to do with playback offset or any internal ioHD processing.

  not sure this helps but hope it may give you a lead 🙂
• 

  E. Eric johnson iii

  January 22, 2008 at 11:30 pm

  hi carsten-

  thank you for the post and the ideas. with the IoLA i had the same issues you wrote about, but was able to get that figured-out. it just doesn’t appear to be the case with my IoHD.

  i’m going to walk away from the machine & look at it first thing tomorrow. maybe i’ve just looked at it so many times i can’t make heads or tails of the situation.

  again, thank you for the post,

  -eric

  e. eric johnson iii
  eric@lillmonster.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in post production – START 2 FINISH: What It Really Takes to Race A Bike
• 

  Jeremy Garchow

  January 22, 2008 at 11:34 pm

  Are you saying that the audio and video are not in sync out of the ioHD or that your canvas and external monitor are not in sync?
• 

  E. Eric johnson iii

  January 22, 2008 at 11:42 pm

  sadly, both are out of sync… or at least i’ve looked at it so many times i can’t tell anymore. i’m hoping a fresh look in the morning will make sense of the situation.

  thank you for your input and i’ll report back in the morning.

  -eric

  e. eric johnson iii
  eric@lillmonster.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in post production – START 2 FINISH: What It Really Takes to Race A Bike
• 

  Jeremy Garchow

  January 23, 2008 at 5:39 pm

  So, what do you see this morn?
• 

  E. Eric johnson iii

  January 23, 2008 at 10:45 pm

  hi jeremy-

  sorry for the late reply, i had a client meeting this AM.

  after that i went back to the edit system & did the following:

  restarted the machine, then restarted IoHD, then opened FCP, double-checked my RT settings (nothing changed) and went with a frame offset of 5 and it appears, on the tower, to be in sync!?

  i’d like to think it’s not operator error since i haven’t seen anything to point in that direction, but i have no other explanation at this point.

  thank you for the time – now on to the sync with the MBP…

  again thank you & glory to the cow.

  -eric

  e. eric johnson iii
  eric@lillmonster.net
  LILL MONSTER MOTION PICTURES
  principal, producer-director-camera

  now in post production – START 2 FINISH: What It Really Takes to Race A Bike

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