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doggy  
#1 Posted : Sunday, June 29, 2014 7:09:46 AM(UTC)
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Please help as I am confused.

Although I found a nice basic UV map that can be resized and/or transformed to be used in a virtual studio I don't manage to create one myself
as I understand it is made up of a red and green layer (gradient) and adding (mode) them together I do visually get the exact same visually as the one I found online that works.
BUT... that one always give a distorted view (vertical lines , horizontally half the size approx basically a total mess

what is the trick please

I did notice that some virtual sets that use UV maps seems to use a different standard one compared to the one used in vMix.

Inquiring minds like to know
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admin  
#2 Posted : Sunday, June 29, 2014 8:06:01 AM(UTC)
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See below:

http://www.vmix.com.au/k...ual-set-specification-10

UV Map PNG files need to be 64bit so the red/green colours can range from 0 to 65535
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thanks 4 users thanked admin for this useful post.
doggy on 6/29/2014(UTC), Thremir on 6/29/2014(UTC), claudeir on 11/30/2018(UTC), smudge1977 on 4/30/2020(UTC)
doggy  
#3 Posted : Sunday, June 29, 2014 9:35:34 AM(UTC)
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ok, that works , but my edges (when video is panning are distorded )
Imagine this i where the gamma corrected comes into play , any hints please
Thanks
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admin  
#4 Posted : Sunday, June 29, 2014 9:47:52 AM(UTC)
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If you can provide a screenshot it will make it easier to see what might be happening.
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doggy  
#5 Posted : Sunday, June 29, 2014 10:10:31 AM(UTC)
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sending clip by email as it becomes most obvious (panning)
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admin  
#6 Posted : Sunday, June 29, 2014 10:16:19 PM(UTC)
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There appears to be a problem with your gradients.
They start out 0,1,2,3 etc as they should but then go back to 0 again towards the start.

They need to evenly increment across the entire image for it to look correct.
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doggy  
#7 Posted : Monday, June 30, 2014 12:39:00 PM(UTC)
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Thanks Martin and I understand ... just dont seem to manage it or maybe gradients aren't correct on PS ;-)
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admin  
#8 Posted : Friday, July 4, 2014 4:21:31 AM(UTC)
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Here is a sample set with a HD 64bit UV Map:

http://www.vmix.com.au/download/uvmapsample.zip

You can try importing the image into photoshop, moving it around and saving it out
again to see if photoshop preserves it correctly.

Regards,

Martin
vMix
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doggy  
#9 Posted : Friday, July 4, 2014 4:36:26 AM(UTC)
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Thank you Martin

My problem is not being able to alter a UV map (as I found one online also and see my GoPro lens correction altering I did in this Post

repositioning , changing its shape and what not all works when starting from an example like yours and than saving it

I was trying to make one from scratch . Got close , just the edges ;-)

Tried some free to test virtual sets , just had to replace their uv map with 'ours' and 'translate' the PSD file to the vMix xml :-)
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claudeir  
#10 Posted : Friday, November 30, 2018 1:09:54 PM(UTC)
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Hi friends, thanks so much for your uvmap sample, Im studying that.

Please, could you send some tutorial to teach me how to create a new one with
all size that I can ?

Thanks so much !!!
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LMTunkara  
#11 Posted : Tuesday, March 2, 2021 11:48:07 PM(UTC)
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Originally Posted by: admin Go to Quoted Post
Here is a sample set with a HD 64bit UV Map:

http://www.vmix.com.au/download/uvmapsample.zip

You can try importing the image into photoshop, moving it around and saving it out
again to see if photoshop preserves it correctly.

Regards,

Martin
vMix


Hi there Martin,

Did not want to create a new thread so piggybacking this one.

Thanks for the UV sample but I have this strange issue that after I resize it for my screens, when I drop videos into the inputs in vMIX, the images are heavily pixelatted? Any ideas why this happens? I have tried the sample sets that cam with the software but the videos work fine in them.

Cheers

Mark
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doggy  
#12 Posted : Wednesday, March 3, 2021 1:06:31 AM(UTC)
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Originally Posted by: LMTunkara Go to Quoted Post


Did not want to create a new thread so piggybacking this one.

Thanks for the UV sample but I have this strange issue that after I resize it for my screens, when I drop videos into the inputs in vMIX, the images are heavily pixelatted? Any ideas why this happens? I have tried the sample sets that cam with the software but the videos work fine in them.


Should have, it's 7 years old !

more recent: https://forums.vmix.com/posts/m87962-UVmap-from-scratch#post87962 shouldhelp understand why just edit and saving didn't work out
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LMTunkara on 3/3/2021(UTC)
Vince Beck  
#13 Posted : Wednesday, March 3, 2021 2:41:57 AM(UTC)
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If you see a pixelated image, make sure you save as png (File>Save as> PNG) in Photoshop, don't use save for the web. And double check that you are working in a 16bit/channel mode (Image>Mode>16 bits).
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LMTunkara on 3/3/2021(UTC)
LMTunkara  
#14 Posted : Thursday, March 4, 2021 8:45:06 PM(UTC)
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Thanks for the assistance guys.

I followed that tutorial and made a 16bit UV gradient in GIMP but for some (frustrating) reason, any video I load into my screens are pixellated when I zoom in!

The background image I'm using is 4K so I wonder if that has anything to do with it? I think my config is fine (below)

I'm obviously doing something wrong but can't quite work it out.

Cheers

Virtual Set

Quote:
<virtualSet>
<input name="Background" x="0" y="0" zoomX="1" zoomY="1" rotateX="0" rotateY="0" rotateZ="0" dynamic="True">background.png</input>
<input name="Main Screen" x="0" y="0" zoomX="1" zoomY="1" rotateX="0" rotateY="0" rotateZ="0" dynamic="True" uvmap="screen_main.png">blank.png</input>
<input name="Screen Right" x="0" y="0" zoomX="1" zoomY="1" rotateX="0" rotateY="0" rotateZ="0" dynamic="True" uvmap="screen_right.png">blank.png</input>


<zoom name="Full" x="0" y="0" zoomX="1" zoomY="1" rotateX="0" rotateY="0" rotateZ="0" />
<zoom name="Custom" x="0" y="0" zoomX="1" zoomY="1" rotateX="0" rotateY="0" rotateZ="0" />
</virtualSet>
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Revocayne  
#15 Posted : Thursday, August 19, 2021 6:25:11 PM(UTC)
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You have to double check on your UVmap file if it's at 64 bit in total. You have to save your PNG in 16bits/channel which is 64bit in total.
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