Frame line shown during zooming in and out from custom Virtual Set - Custom virtual set problem Options  Watch this topic  Print this topic » Normal Threaded

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Revocayne		#1 Posted : Wednesday, May 12, 2021 4:48:07 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		I've created my own virtual set and UVmaps to fit my virtual event stage but however, I've noticed this weird line that keep showing at the frame sometimes on the top, sometimes on the left. The line will not go away even if I do cropping. I've tried the green screen settings and it's not because of green screen keying either. Anyone has any idea how to solve this? It has bugged me for quite some time but I couldn't see any solution to this. Thank you. [img=https://flic.kr/p/2kY9gEV]Custom Stage[/img]
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doggy		#2 Posted : Wednesday, May 12, 2021 5:01:34 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/27/2012(UTC) Posts: 5,216 Location: Belgium Thanks: 291 times Was thanked: 955 time(s) in 790 post(s)		were you able to pinpoint which layer of the VS it appears with?
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Revocayne		#3 Posted : Wednesday, May 12, 2021 5:54:58 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		It's with the camera layer, where the capture card works for this layer.
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doggy		#4 Posted : Wednesday, May 12, 2021 6:13:21 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/27/2012(UTC) Posts: 5,216 Location: Belgium Thanks: 291 times Was thanked: 955 time(s) in 790 post(s)		Originally Posted by: Revocayne It's with the camera layer, where the capture card works for this layer. You are not giving much details are you. is that a regular layer or one you put on a UV map or .... Is it always at some edge of that layer ( maybe zoom the source in a little in that case) ? but looks like its could be a camera/capture card issue not a VS one
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Revocayne		#5 Posted : Wednesday, May 12, 2021 6:17:34 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		Sorry I'm new to this custom virtual set. The layers are on a UVmap that is add into input for config.xml file. So the camera layer is added directly to the UVmap through input of the virtual set. I tried cropping the UVmap edges from it's original file already but still it has the same lines so I assumed it's not the UVmap file issue.
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Revocayne		#6 Posted : Wednesday, May 12, 2021 6:19:11 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		I've also tried with different capture card but it gives same results.
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doggy		#7 Posted : Wednesday, May 12, 2021 6:36:27 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/27/2012(UTC) Posts: 5,216 Location: Belgium Thanks: 291 times Was thanked: 955 time(s) in 790 post(s)		Originally Posted by: Revocayne I've also tried with different capture card but it gives same results. and what about different camera ? do you also see that in the camera input or overlaid on a color input? What if you use a VS that omes with vmIx , the one that has uv maps in it ? Did you make the VS ? .....
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matkeane		#8 Posted : Thursday, May 13, 2021 6:07:40 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 10/6/2020(UTC) Posts: 98 Was thanked: 21 time(s) in 21 post(s)		I sometimes see artefacts along the edge of UV mapped layers in Virtual Sets I've made. Just a guess, but I think it's due to anti-aliasing when the UV maps is resized/transformed. Usually masking the edge by 1px in Photoshop removes the problem.
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1 user thanked matkeane for this useful post.		doggy on 5/13/2021(UTC)
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Revocayne		#9 Posted : Friday, May 14, 2021 3:36:06 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		Originally Posted by: doggy Originally Posted by: Revocayne I've also tried with different capture card but it gives same results. and what about different camera ? do you also see that in the camera input or overlaid on a color input? What if you use a VS that omes with vmIx , the one that has uv maps in it ? Did you make the VS ? ..... Yes I made the VS, Thanks for the suggestion to use the VS that comes with vMix. When I uses that it doesn't show the line. So I guess the UVmap that I did was faulty. I'll try again and keep you guys posted
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Revocayne		#10 Posted : Friday, May 14, 2021 3:37:18 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		Originally Posted by: matkeane I sometimes see artefacts along the edge of UV mapped layers in Virtual Sets I've made. Just a guess, but I think it's due to anti-aliasing when the UV maps is resized/transformed. Usually masking the edge by 1px in Photoshop removes the problem. How do you mask the edge? Any particular way to do so? or simply erase the edge for 1px?
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matkeane		#11 Posted : Friday, May 14, 2021 6:04:12 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 10/6/2020(UTC) Posts: 98 Was thanked: 21 time(s) in 21 post(s)		Originally Posted by: Revocayne How do you mask the edge? Any particular way to do so? or simply erase the edge for 1px? Yes, that did the trick for me, and a 1 pixel crop was enough to remove the dodgy edge, but not make a visual difference in the Virtual Set. I think that particular UV map had been transformed in Photoshop and, perhaps due to the scaling algorithm, the edges seem a bit noisier than ones exported from Blender or After Effects.
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doggy		#12 Posted : Friday, May 14, 2021 6:11:00 PM(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/27/2012(UTC) Posts: 5,216 Location: Belgium Thanks: 291 times Was thanked: 955 time(s) in 790 post(s)		Originally Posted by: matkeane Originally Posted by: Revocayne How do you mask the edge? Any particular way to do so? or simply erase the edge for 1px? Yes, that did the trick for me, and a 1 pixel crop was enough to remove the dodgy edge, but not make a visual difference in the Virtual Set. I think that particular UV map had been transformed in Photoshop and, perhaps due to the scaling algorithm, the edges seem a bit noisier than ones exported from Blender or After Effects. Nice Would be interesting to see if the same issue occurred here
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Revocayne		#13 Posted : Friday, May 14, 2021 6:38:53 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		Originally Posted by: matkeane Originally Posted by: Revocayne How do you mask the edge? Any particular way to do so? or simply erase the edge for 1px? Yes, that did the trick for me, and a 1 pixel crop was enough to remove the dodgy edge, but not make a visual difference in the Virtual Set. I think that particular UV map had been transformed in Photoshop and, perhaps due to the scaling algorithm, the edges seem a bit noisier than ones exported from Blender or After Effects. I've used this method but it doesn't work for me. But one thing I realized is because I made the UVmap size accordingly to the stage size. When I refer to others, their UVmap is actually in a bigger size. I noticed edges when I tried zooming in and out using Windows Photos App too.
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Revocayne		#14 Posted : Friday, May 14, 2021 6:39:55 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		Originally Posted by: doggy Originally Posted by: matkeane Originally Posted by: Revocayne How do you mask the edge? Any particular way to do so? or simply erase the edge for 1px? Yes, that did the trick for me, and a 1 pixel crop was enough to remove the dodgy edge, but not make a visual difference in the Virtual Set. I think that particular UV map had been transformed in Photoshop and, perhaps due to the scaling algorithm, the edges seem a bit noisier than ones exported from Blender or After Effects. Nice Would be interesting to see if the same issue occurred here Thanks for sharing and yes I used this method to create my UVmap. The original from vMix gives me distorted view which is not usable and it's difficult to change.
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Revocayne		#15 Posted : Friday, May 14, 2021 7:33:58 PM(UTC)
Rank: Member Groups: Registered Joined: 5/12/2021(UTC) Posts: 26		I've tried by making the uvmap bigger, and then zoom into proper scale with my stage, but still the problem presents. Also tried cropping edges but couldn't solve it. I copied the other UVmaps from other VS that doesn't show that line and manipulate with it, it works. However, there's some scaling difference which I need to correct it in vMix. I have not seen lines anymore but this is just a workaround. Would like a proper way to fix it or a way to create a UVmap using Photoshop instead of using GIMP maybe if anyone could guide me with. Thanks for all your help and much appreciated.
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