Audio sync with mxo2 mini

[Chris Gormlie]

Shane,

Yeah the scale input is all set and in general the picture is much better than i’d hoped for being an uprez and all.

A wee bit more investigation into the audio seems to indicate that the drift ebbs in and out, though that may just be the lipsync on the master.

I’ve dropped matrox a line, hopefully hear back, until then I have resolved myself to ingest the whole thing in 10 minute chunks.

Cheers

[Shane Ross]

OK…in the MXO2 mini system prefs, in the AV INPUT…you chose SCALE INPUT FOR CAPTURE, right?

Hmmm…50i SD to 50i HD…typically you see shift if you go 60 to 24. You PAL guys typically have everything match and work fine.

Call Matrox yet? That would be the first thing I did. MXO2 mini is new, and I haven’t had the pleasure of using one yet for review.

Shane

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[John Fishback]

I’m not familiar with the MXO2. But, I have a general question. Are the J-3 and MXO connected to house sync? Or, is the ref from the MXO going to the J-3? Just a thought.

John

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[Shane Ross]

I generally don’t use house sync when capturing…only when outputtting.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD…don’t miss it.
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[Chris Gormlie]

John,

The J3 has REF, in fact its the only thing that has REF at the moment, which seems kinda redundant.. however.. as far as i can discern, the mxo2mini has no dedicated REF input.

cheers

[John Fishback]

You’re right, Chris. I was thinking of the MXO2.

John

MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870
ATTO ExpressSAS R380 RAID Adapter, PDE Enclosure with 8-drive 6TB RAID 5
24″ TV-Logic Monitor
Final Cut Studio 2 (up to date)

Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN

[Jason Porthouse]

Just a thought. When I was working on a doc using a J30 a while back, we noticed audio drift problems when batch digitising if the ‘preview’ button was checked in the audio tab of the capture tool. Took this off and no problems after that. Admittedly it was a J30 digitising rushes over firewire, but may be worth trying…

Jason

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[Chris Gormlie]

A wee bit more testing has resulted in me ingesting same footage, same deck onto same drives (Firewire 800 single drive non raid lacie) at 720p rather than 1080i.

This time the audio is in sync throughout.

Could it be a drive issue? Is the stress of 1080i substantially more than 720p that either my capture drives, or even the mxo2 mini cant handle sustained capturing over long clips? FCP didn’t flag up any dropped frame issues and I’ve certainly had no issues with 1080i50 HDV before.

Still waiting to hear from matrox.

cheers

[Bassel – matrox video products group]

Hi Chris, Matrox Technical support is monitoring this thread closely and will have a Matrox Technical Support Representative contacting you shortly to assist you with your troubleshooting.

Best regards,
Bassel

[Bassel – matrox video products group]

Hi Chris, Matrox Technical support is monitoring this thread closely and will have a Matrox Technical Support Representative contacting you shortly to assist you with your troubleshooting.

Best regards,
Bassel