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Video lag on external monitor with IO Express
I have the AJA IO Express and am using FCP 7.0.3 and Avid MC 5.5.3. I have a 2 x 3 GHz Quad-Core Intel Xeon, 8GB RAM, 10.6.8.
4 x 300GB RAID 0 Video RAID – Tested at around 200MB/sec read and write.
When I’m playing back an HD timeline in FCP the video lags behind the audio only on the external monitor. It starts off fine but within a few seconds it’s about 2 1/2 seconds behind the audio. It doesn’t go more than that. Any flavor of HD codec, all the ProRes’s, DVCPRO etc. Standard Def is fine.
I’ve been talking with AJA and we’re stumped. The Avid outputs are fine, HD timeline, external monitor is right in sync. AJA TV is fine, video stays in sync. It’s only in FCP in an HD timeline.
I’ve looked at the video offset but that doesn’t do it. The video starts in sync but rapidly gets to about 2 1/2 seconds behind.
We’ve tried removing all the plugins, downgrading the driver all the way to 8.1.2, new project, dump all cache, user settings, etc.
I monitor with HDMI and component. I checked the audio from the HDMI and the audio stays in sync but the video lags.
Any ideas on this?
Thanks a bunch.
Michael
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8 Replies
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Is the source of the audio all 48k (camera’s audio)? Does it do it if you perform a mixdown too?
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.
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This audio is anything from the camera audio at 48K to a mixed mixdown to MP3s. Some timelines are a mix of everything some are just a 2 channel mixdown. I’ve tried mixing down the video tracks but no luck.
2 x 3 GHz Quad-Core Intel Xeon
OS 10.6.4
4GB RAM -
I’ll wager the MP3 files are the problem… FCP doesn’t support them at all.
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.
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Well it happens on timelines where there are no MP3 files as well, just a 2 channel 48K 16 bit stereo mixdown.
2 x 3 GHz Quad-Core Intel Xeon
OS 10.6.8
8GB RAM -
Well that’s not good.. the MP3’s should be transferred to aif’s at 48k..
Post more about the history of the computer… when was the last time you rebuilt the startup disk? Have you ever done that?
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.
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Mixdown in Fcp and Avid are totally different.
Try selecting all in the timeline, then hit command-option-r.
Also, what format/codec is the timeline? What easy setup are you using?
Where’s the media coming from?
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Rebuilt as in DiskWarrior? If that’s the case I just did that last week. Is there another tool I could use?
I had a Blackmagic Decklink Extreme 2 for a little over a year. That worked fine HD and SD. I got the IO Express because I do a lot of Avid work as well. I uninstalled the Decklink drivers and restarted before I installed the IO Express. Would a different slot make a difference?
I have my graphics card (Radeon X1900) in slot 1, nothing in slot 2, Slot 3 is the AJA card, and slot 4 is a Sonnet Tempo E4P SATA card (just updated the drivers).
WAIT! Updating the Sonnet drivers did it! OK that’s weird how it only effected FCP and not Avid.
Thanks for all your help, if you hadn’t asked me about me more about my system I wouldn’t have looked at that card and then thought about the drivers.
Michael
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no, rebuilt as in back up your startup disk, then erase it, reinstall everything from the ground up.
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.
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