Help with green screen chroma key

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knowyou22

New Member
HI, im having trouble adding a background to my chroma key.
U have set up a scene for my webcam, then added chroma key to filter in sources.
From what ive found on the net, i then add a image in sources and make sure it is under the webcam in sources.
But the background just goes behind webcam on the main obs screen, not in my webcam window.
Any help pls.
 
W

WBE

Member
Your webcam window, you mean the software that comes with the webcam to show it's output? OBS Studio cannot change the output of your webcam, but it can use it to compose a new video stream to broadcast or record. Which you apparently succeeded at by appying Chroma Key and a background image.

What you probably want, is using the output of OBS (the contents of the Program window) as a "webcam" for some collaboration software. To do that: within OBS at the bottom right click Start Virtual Camera. Then within your collaboration software another video source is added. So don't select your webcam there but OBS' virtual cam.
 
K

knowyou22

New Member
Hi thanks for the reply,
Sorry i should of explained better , im new to this so bear with me :P.

From the videos ived watch they do the following in obs, they do this as a tutorial from a new obs screen.

Add new scene, add video capture in sources, add webcam as the video capture in sources.
Right click on webcam in sources, select filter, select chroma cam.
Then in sources add image, and make sure image is under webcam in sources.

Thats the steps they do, only using there webcam, and obs.

I have tried and can adjust all the chroma cam setting etc, but cannot the rplace my webcam background with a image.
 
W

WBE

Member
Chroma Key filter makes one specific color transparent, commonly green or blue. So you need to be in front of a green curtain, wall or even a high resolution led screen showing green (see this year's Eurovision Song Contest's entry by Greece).
Green_screens_compare_with_Iman_Crosson_20110524.png

(image source: https://upload.wikimedia.org/wikipe...creens_compare_with_Iman_Crosson_20110524.png)

Some software exists that uses artificial intelligence/machine learning technology to detect what is the foreground and distinctively the background and then replacing that background. So you don't need to find a green curtain...
You mention ChromaCam, which is such software. After you installed that correctly, it will make a "virtual web cam" available, just like I mentioned in my previous reply. Within OBS Studio, for your Video Capture Device, don't select your webcam, bu select ChromaCam's output.
 
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knowyou22

New Member
Thanks for the reply, i meant to say "chroma key" i have not used "chroma cam" i typed it wrong "chroma cam" is the one in obs under filters very sorry.
I can link the video tutorial im trying to replicate if you have time to watch , it goes for 3:12 .
I have a green curtain behind me, i just cant add a background to the "chroma key".
https://www.youtube.com/watch?v=8faHiVALNqE
 
K

knowyou22

New Member
Please see this edited message i mean to say "i typed it wrong "chroma key" is the one in obs"
knowyou22 said:
Thanks for the reply, i meant to say "chroma key" i have not used "chroma cam" i typed it wrong "chroma key" is the one in obs under filters very sorry.
I can link the video tutorial im trying to replicate if you have time to watch , it goes for 3:12 .
I have a green curtain behind me, i just cant add a background to the "chroma key".
https://www.youtube.com/watch?v=8faHiVALNqE
Click to expand...
 
K

knowyou22

New Member
I have found the problem.
I did not have enough light directed at my green screen fabric, it now works great :P
 
FerretBomb

FerretBomb

Active Member
Sounds good! You can also set a custom chromakey keying color, but more light is always a very good idea, especially dealing with webcams. :)
 
K

knowyou22

New Member
Oh yes, i did actually try the chromakey keying color.......(thats where you select the part of your green screen that looks the best and apply that overall ?) It didnt work as i imagine i didnt have not enough light to start with.
Now that i do have enough light to get chroma key to work in general i will try it again.

Need to find the tutorial video now .
 
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