7
votes
Accepted
Is lighting a green screen necessary?
You'd probably want to light it anyway, as it will make it easier to pull a key if it's properly lit. The farther you can keep it away from the objects or talent you'll be keying, the better. But ...
- 2,146
5
votes
Accepted
Best and easiest way to remove tracking markers from green screen video
You can do this quite easily without content-aware fill or anything like it. I'd tackle this by doing the following:
create a rough shape for each tracking-point (the color doesn't matter)
track each ...
- 2,665
4
votes
Accepted
How to deal with reflections in a space helmet
The best thing you can do is get as much right on set as possible. Cover cast, crew, and equipment with black fabric, hide them behind black curtains, Get your talent as far away from the green ...
- 4,394
4
votes
Accepted
How to remove background from video without using green screen
Looking at your first example, I woul guess green screen, and not a particularly good one. It looks like they really need to increase the spill suppression, judging by the green spill evident on the ...
- 13.6k
4
votes
Remove Greenscreen Reflections?
You don't say what you're using to edit these videos, but there may be a better chromakey plugin for your platform than what comes natively.
Also, again depending on your platform, most editors will ...
- 4,674
3
votes
Can I achieve effective keying if I use green lights to illuminate a white wall?
My favorite quick, cheap, DIY greenscreen over the years is a gallon of chromakey paint and a sheet of drywall from Lowe’s or Home Depot. One sheet is enough for a seated, talking head, like you see ...
- 4,394
3
votes
Accepted
DJI Osmo X3 vs Canon 5D Mk III for easier chroma green screen keying
The key to pulling a good key is a clean separation between key and subject. All things being equal, higher resolution will give a sharper edge between key and subject, which is good. But that's ...
- 4,730
2
votes
Remove Greenscreen Reflections?
Even a typical lamp with a "daylight"-colored bulb in it can act as a lighting source for your product. I'm sure your boss could spring for one light bulb!
If you shoot again with the new lighting, ...
- 1,589
2
votes
Remove Greenscreen Reflections?
I have a couple of suggestions that could be of help:
1) Use a polarizer to reduce reflections. You say your boss won't spring for anything else, but you can pick one up fairly cheaply (like under $...
- 2,146
2
votes
Generate travelleng matte from a nearly-white bright background?
The problem that you're going to have with this is that the colour of the screen is too similar to colours in the foreground. If you look at the levels on the highlighted part of the drummer's face ...
- 13.6k
2
votes
Does and/or how chroma keyed image show on the studio cameras?
You are correct that the chroma key is typically performed in the vision mixer/video switcher. In order to assist camera operators in framing shots around chroma keys (and other downstream effects ...
- 2,405
2
votes
Accepted
"Subtracting" image with clean slate on Premiere Pro/After Effects
Haven't tried it, but this might work by dragging both shots in after effects, setting the layer with the subject to "difference", which shows the parts that are different. You can then pre-compose ...
- 2,665
2
votes
How can I take a part of a video and chroma key only the parts that I select?
This isn't chroma keying. If your subject isn't in front of a green screen (or blue) then you're only other alternative is to mask it, rotoscope to be precise. After Effects does have a tool called a ...
2
votes
Can I achieve effective keying if I use green lights to illuminate a white wall?
I interned at a company many years ago which used a retro-reflective background coupled with a green LED ring light, which surrounded the lens. The wall looked silver/white when the device wasn’t in ...
- 4,394
2
votes
Can I achieve effective keying if I use green lights to illuminate a white wall?
I think if you light the wall green, you will get lots of bounced light back onto your subject which will play havoc with your key. Amazon does very cheap greenscreens now, which work pretty well so ...
- 7,470
1
vote
Applying different color keys to one layer in AE
You'll have to make as many duplicates of the layer as there are colours. Apply the appropriate key to each copy, and place the layer you want it to reveal beneath it. On the revealed layer use a ...
- 13.6k
1
vote
Is 8 Bit 4:2:0 chroma subsampling "good enough" for chroma key?
Four big factors in your results...
About 10 years ago, I was using HDV, which is not only 4:2:0, but is actually 1440 pixels wide, stretched to 1920 wide. At the time, I wasn't always happy with the ...
- 156
1
vote
Is 8 Bit 4:2:0 chroma subsampling "good enough" for chroma key?
"Good enough"? Sure. I wouldn't love to work with subsampled footage for keying, though. You want to maximise resolution, minimise or avoid subsampling and avoid spill. If your screen is ...
- 2,665
1
vote
Accepted
Greenscreen recommendations
Nice explanation of your problem.
I would simply move the two softboxes higher.
To minimize the falloff put the lights about the center of the framing of the camera. If your camera is targeting the ...
- 1,152
1
vote
video chroma keyed background into Skype
If there is no plugin I never heard of, the only way you could do this is by feeding an already keyed signal into skype. You could try researching if realtime keying can be emulated on a virtual ...
- 2,665
1
vote
How to apply multiple chroma keys in ffmpeg?
Instead of always using [1:v], you would use the output of the previous one e.g. [ckout1]
My guess, you want this:
ffmpeg -i input1.mp4 -i input2.mp4 -filter_complex '[1:v]colorkey=0x6AA999:0.1:0.2[...
1
vote
Accepted
Delta Keyer not working with Clean Plate
With one exception (Garbage Matte), the Delta Keyer doesn't "remove" things. What it does is create and/or apply masks and mattes so that keyed areas can be replaced by other things (either within ...
- 4,730
1
vote
How to lock and scroll image, using smartphone green screen mockup?
You will need to:
track the motion of the screen, using whatever tracking tools you have at your disposal. A 3D track or a corner pin type track will both work, because it's a flat rectangular screen....
- 13.6k
1
vote
What are some Best Camera Settings for Recording for Chroma Keying and which color of cloth reflects least green color?
Lighting is the biggest factor in improving this setup. Move the subject further away from the sheet, use a lens that has a shallow depth of field so that any imperfections in the sheet are harder to ...
- 7,470
1
vote
Can I paint a rough wall with chromakey paint to make a green screen?
It depends on some factors.
For example, how far is the wall from the main actors? If you have some good spacing, the texture can probably blur out due to DOF. But as on a green screen you need to ...
- 1,152
1
vote
Post production removal of uneven green screen with glass object shattering in foreground
I don't even see how rotoscoping would help and can't think of a way to solve the issue directly with the green screen footage (if I understand the situation correctly anyway). If the glass is ...
- 19.3k
1
vote
Post production removal of uneven green screen with glass object shattering in foreground
If the example were a lightbulb at the top dropping to the bottom you would take one frame with the bulb at the top and one frame with the bulb at the bottom, then simply use half of each as a mask.
...
- 847
1
vote
Export Composition Background in After Effects
I hope the person receiving your 'green screen' lower third doesn't ever find you in a dark alley. If it was me I'd be looking to bring the hurt. Really, this is not the way to do it.
Firstly there ...
- 13.6k
1
vote
Keying + Tracking onto Tablet/Smartphone with Green Screen Display in Adobe Premiere or After Effects
With these kinds of things, I suggest not even using a green screen in the first place, especially one that is in an app and casts a green glow on the actors hands or body and picks up on reflections. ...
- 799
1
vote
Keying + Tracking onto Tablet/Smartphone with Green Screen Display in Adobe Premiere or After Effects
Trackers never hurt and there's almost no reason not to use them, but there's no substitute for pre-production and field testing. The only failure is failure to plan.
Ideally your markers would be ...
- 4,674
Only top scored, non community-wiki answers of a minimum length are eligible