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Playback of 1080i 29.97 lags

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Shane Ross
Playback of 1080i 29.97 lags
on Apr 29, 2011 at 8:36:51 pm

AJA Kona 3...MacPro Quad 3.0Ghz... FSI 2460 monitor. FCP 7.0.3... MacOS 10.5.8.

I can play back 23.98 psf footage all day long...no problem. But if I get ANY 29.97 footage...1080p 29.97, 1080i 29.97...playback lags.

One project is 1080p 29.97...ProRes 422. If I choose 1080i 29.97 10-bit playback, the lag happens almost instantly on the external monitor. After two seconds, I am way off. The FSI image plays back slow...almost half speed. The AJA CP says the frame buffer is 1080i 29.97. If I switch to 8-bit 1080i 29.97, I remain in sync for longer, but after 5 seconds, it is gone again.

Another project, 1080i 29.97...interlaced. Same issue...10 bit goes out of sync instantly...8 bit takes longer. BUT, I also get weird cadence on the monitor...think it has something to do with the interlacing.

I trashed preferences, and uninstalled the drivers and installed the latest 8.1 drivers... and the issue remains. This machine cannot play back 1080i 29..97 footage without lag. There is another edit station here, that has the exact same specs...but it can play the footage fine...no lag.

Please tell me I am missing one small simple thing.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Chad Brewer
Re: Playback of 1080i 29.97 lags
on Apr 30, 2011 at 12:39:34 am

Hey Shane,

After this post, I'll be stepping aside as I'm sure our friend Jeremy G. will find interest in figuring out what's going on here. Also, I swear there was a thread either here or in FCP with someone having the EXACT same problem in the past year or so.

I was having a completely separate issue with one of our KONA 3's recently and it was advised that I re-seat the card in a different slot. That was not the solution to my problem, but I do seem to recall something about a slot configuration in regard to this problem. I'm not sure if that is a solution, but I know that different vintages of MacPro's want the KONA 3 in a specific slot. I found our year old MacPro could run the KONA 3 in either slot 2 or 3 with no problems. So, I don't know if changing slots would be a good idea or possible solution for your problem?

Chad Brewer
Senior Broadcast Videotape Operator
TeleVersions, LLC - Chicago


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Shane Ross
Re: Playback of 1080i 29.97 lags
on Apr 30, 2011 at 12:48:25 am

Good idea! I'll try reseating the card. If that doesn't work, switching slots. Currently in Slot 3.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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AJA Sales Department
Re: Playback of 1080i 29.97 lags
on Apr 30, 2011 at 1:22:48 am

http://www.aja.com/support/kona/kona-system-configuration.php

If this doesn't help resolve your issue, feel free to contact AJA Technical Support.

--
AJA Video Systems
+1 (530) 274-2048 Intl.
(800) 251-4224 US
sales@aja.com


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Bob Zelin
Re: Playback of 1080i 29.97 lags
on Apr 30, 2011 at 4:25:32 pm

shane,
Click on the Apple symbol, then MORE INFORMATION.
On the screen, you will see on the second line- MODEL IDENTIFER.

If it's a 1,1 machine (and not a 2,1 3,1 4,1 or 5,1) you have an original Mac Pro that used the Expansion Slot Utility. If Slot 3 is a x1 lane, you will have this problem.

This is how to open up the expansion slot utility, and change the number of lanes for slot 3 (and the other slots) -

http://www.bobzelin.com/how-to-open-the-apple-expansion-slot-utility

bob Zelin



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Shane Ross
Re: Playback of 1080i 29.97 lags
on Apr 30, 2011 at 4:38:51 pm

Thanks Bob. I should have mentioned it is a 2,1 machine.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Shane Ross
Re: Playback of 1080i 29.97 lags
on May 2, 2011 at 6:39:26 pm

Issue resolved. I cannot play audio out through the KONA...I have to use BUILT IN AUDIO and the output on the back of the Mac into the mixer. When I bypass the Kona, it works fine, stays in sync. If I switch and use the KONA for playback...sync goes out of whack. And I still have to use 8-bit for Viewing. 10-bit throws it off sync after two seconds.

Yes, it is a band aid. But this machine doesn't do tape outputs, only tape captures. And 29.97 is a rarity here....23.98 is the norm. And it works.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Bob Zelin
Re: Playback of 1080i 29.97 lags
on May 2, 2011 at 11:39:29 pm

that makes no sense. The Audio out of the MAC is NOT in sync with the Kona. the only thing that is ever in sync is the Kona audio outputs - not the MAC audio output.

Bob Zelin



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Shane Ross
Re: Playback of 1080i 29.97 lags
on May 3, 2011 at 12:01:04 am

Yeah...if I enable audio through the Kona, sync in a 29.97 sequence starts to drift. Don't select it, and it's fine.

This is a 4 year old Kona 3, in a bay at a major network, so getting any sort of permission to call and do tech support and possibly RMA this thing would be a pain. But this workaround works for now. When things get REALLY bad...I might call in. But most of the time we do 23.98, which is rock solid. And all tapeless delivery.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Mark Spano
Re: Playback of 1080i 29.97 lags
on May 3, 2011 at 2:05:05 pm

This could also be a card firmware/driver issue. If you have the keys, I'd reload the firmware and update the Kona drivers on that system. Couldn't hurt...



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Shane Ross
Re: Playback of 1080i 29.97 lags
on May 3, 2011 at 5:21:16 pm

Firmware reloaded and latest drivers installed...I had that much leeway. No change.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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AJA Sales Department
Re: Playback of 1080i 29.97 lags
on May 3, 2011 at 8:48:35 pm

While your facility situation sounds somewhat restrictive in terms of troubleshooting, you may still wish to contact AJA Technical Support for assistance.

--
AJA Video Systems
+1 (530) 274-2048 Intl.
(800) 251-4224 US
sales@aja.com


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Shane Ross
Re: Playback of 1080i 29.97 lags
on May 18, 2011 at 9:47:36 pm

Ahhh...Keith at AJA solved it. I had to launch the very hidden Expansion Slot tool . Set it up for configuration 2, where slot 3 and 4 both have 4x lanes...and then restarted. Worked like a charm.


Yes, BOB, I know you mentioned this...but I thought that the tool didn't pertain to my machine...it did. I thought it only pertained to 1,1...but nope, does to 2,1 too. Because I couldn't find the tool...I thought the machine was beyond that. Nope, just VERY well hidden. Stupid.

But thanks AJA. 4 year old machine...tech support is still there, no support contract required. Nice.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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