With a genlocked system, the delay will variate?

Studio Operators Camera Tracking Augmented Reality Unreal

 

Hello,

I would like to know, I am using genlock with my camera, tracking device and computer capture card. Is that possible the delay keep changing when I using the system? Or something wrong in setting up delay?

Thanks!

   KaManC

 
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Aximmetry
8/6/2021 3:56:20 PM
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Hi,

Do you mean the delay between the tracking device and the camera image?
What kind of tracking device do you use. Did you mean it is genlocked?

If the frequency of your tracking device is different then the fps of your camera then in each frame the delay will be slightly different. (although aximmetry will try to compensate this as much as possible)

Or do you mean the delay constantly grow? (it shouldn't be, I just ask to be sure)

Best Regards


 
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KaManC
8/6/2021 4:16:23 PM
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Hi,

I am using RedSpy. How to call this? A tracking system?

I think my genlock setup is ok because after that the tracking is much more stable.

But sometimes, when I moving the camera, the CG objects is not sync with the camera. The movement is like some kind of delay, then the CG object or the camera image "floating" back to the right position. After a few moment, they sync again. Not constantly grow, just occasionally occur.

So sometimes I adjusted a right delay, then the problem occur, I try to adjust delay to fix. But after a moment I set the value back to fix another delay. Something like that.

So I posted here, see if anyone found a similar problem and their solution.

Thanks!

 
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Winton
8/9/2021 2:06:52 AM
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Actually we have the same problem,sometimes we have to adjust the delay when the delay change.

 
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KaManC
8/9/2021 7:41:41 AM
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Hi Winton,

Thank you for your reply, would you share which system you are using?

Because we are target on live event production, adjusting the delay from time to time is difficult for us.

See if anyone got some ideas for this situation.

 
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Winton
8/10/2021 5:35:03 AM
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Hi KaManC,

We still cannot solve this problem.When we find the delay time cann't match the camera ,we will adjust the delay time manually.

 
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Zoltan@Aximmetry
8/21/2021 3:26:03 PM
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Hi KaManC,

If you genlocked everything then no, the delay should not change over time.  Can I ask which model of capture card do you use?

 
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KaManC
8/21/2021 3:36:27 PM
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Hi,

I am using Blackmagic Design Decklink 8K Pro.

Thanks~

 
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Winton
8/23/2021 1:47:58 AM
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Hi Zoltan,

We use Aja corvid 44 bnc and aja corvid 44 12g BNC 

thanks.

 
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Aximmetry
8/25/2021 8:16:53 AM
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Hi all,

Thank you for the info, we're working on the issue.

 
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jim4586
4/13/2022 4:48:59 AM
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Was this ever resolved?

 
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Eifert@Aximmetry
4/22/2022 11:36:50 AM
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Hi Jim,

Do you still have this problem? If so, can you give more details about it.
It could be that you have a problem related to something else.

Warmest regards,