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pesi  
#1 Posted : Saturday, June 26, 2021 8:23:23 AM(UTC)
pesi

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During an event today, whenever the camera was panned, the live view was choppy and jittered a bit.
This also happened occasionally when the video camera was not being moved and the subjects moved across the stage.
This jitter was transmitted to the live stream and also the recorded video, ruining both.
Note: There was no jitter seen on the cam viewfinder itself.

Then the wierdest thing happened - came home and duplicated the exact same setup and voila - no jitter at all!
What could the cause be?

Laptop Lenovo Thinkpad i7 with 32 GB Ram
dedicated nVidia GPU with 2mb on board
vMix HD v. 24.0.0.62 x64

GPU Mem usage was just 18%
CPU usage was 17%
Total: 25% resources used.

Camcorder: Panasonic 4K UX90 connected via Hdmi to Startech Capture device which connects to the laptop via USB3 (only one camera was used on just one USB3 port).

Can anyone explain what the cause may have been?
Maximus  
#2 Posted : Saturday, June 26, 2021 10:16:27 PM(UTC)
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That seems like an interlacing issue. Since you were unable to duplicate the problem at home I suspect something was different in your hardware or config between the two locations.

Maxi
pesi  
#3 Posted : Sunday, June 27, 2021 5:27:33 AM(UTC)
pesi

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Originally Posted by: Maximus Go to Quoted Post
That seems like an interlacing issue. Since you were unable to duplicate the problem at home I suspect something was different in your hardware or config between the two locations.


Absolutely no difference in either hardware or configuration - exact same setup and devices were used, connected in exactly the same way.
The only difference was that obviously a different Internet connection was used between the 2 tests and of course a different wall power.

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