Blue screen, or Green screen - which is less problematical

Setup: Canon HV20, FCP6.1, MBPro 2.33
I have a Blue screen and am considering getting a Green screen. The Blue, being pretty dark, seems to cause problems for the camera, esp. with contrast with the actor that make for tricky lighting.
Just curious if others have this problem and if Green screen carries its own set of problems--too bright, etc.
Also if anyone knows a good place to buy the Green screen let me know.
Elmer Lang
H2E Productions - "Better Than Water"
http://elmerlang.com - 60+ Films Strong
http://elmerlang.com/TheDeathofMagic.html

Elmer, nice to see you here rather than at 2-pop.
The green screens from http://www.eefx.com/ are among the best I've seen.
I'm writing a basic green screen tutorial using one of its 10x9 foam backed products and we got a pretty good key using a HVX200 and some basic lighting.
You also mentioned the HV20.
Take a look at this tutorial excerpt:
http://69.36.12.13/samples/dvmattep3/dvmattep3guerrillagreenscreen.mov
While lighting is crucial, from what I've researched, green seems to be a better election

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Weird blinking screen on green screen footage

I have this problem with AE, when I RAM preview the pre-keyed green screen footage I get a colourful box of lines popping up now and then when I play the footage. It's hard to explain, but the screen looks like one of those vertical-colourful-lines that you get on the TV when the channel isn't working (On Screen Display?) I will attach the screenshot of how it looks to this discussion. Also, the footage is not missing, it's there, and the blinking only happens when I preview in AE, not when it's rendered. Thank you!

GrowthE wrote:
The format is .MOV, straight from Canon 600D, so I guess no codec?
A format is just a container for a video encoded with a codec. All video, as Rick says, has a codec. Most DSLR's use an h.264 variant as their codec. The problem with that codec for certain things is that it uses interframe compression. I could get into a long explanation of this, but the short version is that it doesn't have full information for every frame. That sort of thing can sometimes get screwy in AE which uses full-frame information for every frame. This was much more of an issue in earlier versions of AE, but from CS5 onward, things are much improved. However, with multiprocessing on, sometimes you can see weirdness with these highly-compressed interframe codecs. That's why Rick is suggesting you try turning that off and clearing your cache.

White screen or green screen question

hi
i have a series of interviews coming up...will shoot 1080. I like the nice clean look of white for the background. Question is whether to shoot with white backdrop or green screen and key white in post. Here is my issue: I want to use part of the space (framing screen right) for bullet points, graphics, etc. but i also would like to achieve this look at 2:40 into the video ( http://www.youtube.com/watch?v=yRK5QVEE8Ng) Clearly, a green screen was used here. I am wondering if I shot against white could i just use the luma and key out my white background, create my effect with white and moving video then key it back in? Thanks.

Here's my 2 centimes, FWIW. luma and chroma keys both have plusses and minuses. Green screen will potentially give you the cleanest key if you follow a few "rules" while shooting. It's a huge challenge to do good green screen: large enough set so that you can light the screen absolutely differently than the talent. You're really lighting two sets-- the talent and the screen. you ought to be able to turn one off without affecting the other. You'll need enough distance to avoid bounceback onto the talent. or a magenta backlight to minimize the bounce. Fly-away hair is another issue-- paste it down. That said, a well shot greenscreen is a joy in post.
A luma key is quick and easy-- IF the subject cooperates and doesn't have any highlights that might get blown off. It's not good for people to have holes in their foreheads, etc.
I'd go green with a good shooter and proper lighting.

How to retain an object (lader) painted blue in a Green screen set....

Hello there!
I would appreciate a piece of advise about a matter I am working on.
I have attached two photos and I will explain what I want to do.
I would like to key out the green backdrop in order to keep just the actors but I also want to replace the blue lader (the blue color) with a fractal noise patern so it looks like it is a burning lader.
OK I can make the fractal noise patern and give it the appropriate randomness. I have also find a way to replace the lader with the fractal noise solid (using alpha matts) but I don't think I am getting a very good result.
Could you suggest a way of keeping only the blue color instead of keying it out?
Thank you!
Yiannis.

Two keying passes, two layers, a fractal noise layer, dummy layer (see pic) and an adjustment layer for color correction nested above your keyed footage. Depending on the movement of the ladder and the camera you may have to do some motion tracking.
Pay very close attention to how I set up the fractal noise layer. This took about 5 minutes. Here's a CS6 project file for you to take a look at. Just replace the missing photo with one you posted.
Use the other picture for the project and redraw the garbage matte and the same project file will give you this:

Blue/Pink or Green screen

Hi. I have a number of 3000 Series C100 lenovo laptops. Of late, when being used by my students, all disappears and you are left looking at a screen with either a bluish or pinkish tinge. Only way out is to force a restart.
After doing this the laptop will function normally for quite sometime (2-3 weeks) then do it again with out warning. I was wondering if this was an overheat problem. Laptops are being run without battery installed as they are connecting to mains supply.
About 6 of the 14 laptops in the suite have begun to experience this problem.
Help pls.... very frustrating.

Check: Settings>General>Accessibility>Invert Colors>Off.

When I apply the Key for a green screen, everything blue turns purple. How can I correct?

When I apply the Key to an evenly lit greenscreen, anything blue turns purple. How can I correct this?

There's way too much blue in that green screen
This is green
Try pulling down the spill level and reducing the spill tint. You're probably going to have to tweak the color selection manually.

Blue and Green Screen

Can you do blue screen and green screen things on Final Cut Pro? Don't tell me how because I don't own it. I just want to know if it's possible.

www.dvgarage.com
Look at DV Matte Pro...as another option.
Shane

Green Screen using AVC-Intra 100 ugly

Been using the hpx300 for approx two months mostly in 720p with great results. Just wraped our first true HD green screen shoot using avc-intra 100 at 24p with the intent of producing a white background mac-ad type, 5 min talking head corporate piece in SD. I had the camera mounted at 90 degrees to capture the 1920 pixels of subjects head-to-toe so I could then manipulate individual zoom and placement in post within a SD timeline. I've got two issues: one is that the images in post seem noisy, and any movement, as in subjects walking across screen, is a total mess - I say seem because all recording and playback on location looked just fine on a 1920x1200 monitor via blackmagic i/o box. I normally do basic editing in premiere with much help from AE for composting and color correction etc. Keylight has always worked great in the past. I must have something wrong with settings in the avc-intra HD content? Secondly, workflow is a bit convoluted... Keylight doesn’t apply in premiere, and AE doesnt do avc-intra. The workaround is to export avc-intra premiere timeline to AE and key that. In theory it should work just fine, but again my images are just noisy. Could this PR to AE workflow degrade image quality? Any suggestion greatly appreciated! Thanks, Matt

Poster must be busy shooting more stuff....
Found some info on that " hollywood camera " site.....
IS HD REALLY HD- GREENSCREEN ISSUES
These plates were all shot with an HVX-200, mostly with the 100 MBps DVCPROHD codec. This was good enough for us for Visual Effects For Directors because we had specific needs, but we don't consider them good enough for full film production.
Here's why:
COLOR SAMPLING: We      prefer all green screen to be 4:4:4, so every pixel has a unique color.      4:2:2 only updates the color every second pixel, but green screen      desperately depends on a sharp, accurate, scientific color transition.      With 4:2:2, you're operating in half resolution. But if you downsize, like      we downsized to 720x480, you're at full resolution again. So because we're      delivering in SD, the plates are 4:4:4 for us. They'll just be 4:2:2 for      you if you're delivering for an HD movie.
PIXEL ASPECT: When      a camera is listed as 1920x1080 HD, that's really stretching the truth.      You'll see that all our plates are in 1280x1080, which is the original      camera resolution, meaning that the plate has to be stretched 150% on the      X-axis to be in the right aspect. In other words, you're only operating at      66% resolution on the X-axis. Did someone say "smearing"?
NOT EVEN 4:2:2: By      the time 1280 has been stretched to 1920 to make up for the 1.5:1 pixel      aspect ratio, 4:2:2 has been stretched out too, basically becoming      4:1.5:1.5
LENS RESOLUTION: Nobody      besides DPs really thinks about the fact that a lens has a resolution.      Zoom lenses are made of many lens elements in a clever configuration, and      each element introduces some blur. That's why top-notch DPs like to use      prime-lenses cut from diamonds from King Solomon's mines, because if the      lens limits the resolution, it doesn't really matter how well you record      the signal after that. Some people have come to the conclusion that the      HVX-200 is really a 720p camera, because the 1080p resolution doesn't      really come through. We tend to agree, but we don't want to start a      religious war, and will say that it's just our personal experience. On top      of that, we've used a $500 wide-angle adapter on some shots, which really      butchers the pixel resolution, so even though we're recording at 1080p,      we're really not. But 1080p allowed us to record with the 100 MBps      DVCPROHD codec, which meant that we still got a very respectable resized      SD signal out of it.
BAYER PATTERN: Most      cameras use a Bayer pattern on the chip, so that every pixel is EITHER      Red, Green, or Blue — but not at the same time. A full Red-Green-Blue      pixel is derived mathematically by interpolation. It's no wonder that some      organisations are starting to call for an objective standard for what      really constitutes a pixel, because a Bayer pixel is definitely not a real      pixel — more like half a pixel. By the way, there are twice as many Green      pixels than Red or Blue in a Bayer sensor, so you're far better off using      green screen than blue screen on video.
HALO: Even      with the internal sharpness generator completely disabled, the HVX-200 has      a clear black fringe several pixels wide on the right side of actors on      green screen. Panasonic vehemently denies it, but it's very easy to see.      In this      picture, notice that white areas get a fringe, but darker areas, like      her legs or hair, don't. Panasonic's explanation has been that it's just a      shadow from the lighting (huh?), but the halo is on the KEY side — so the      only plausible explanation is a quantum singularity localized to the actor      which bends light as it passes by her body. We think it comes from the      Bayer pattern, but we're not sure. And Panasonic shouldn't feel bad. A Nikon      D80 does it too.
HEAVY COMPRESSION: Even      though it seems like a lot that we're recording at 100 MBps in the      DVCPROHD codec, if you calculate the bit-rate per true output-pixel, we're      actually still compressing at a whopping 15:1.
NOISE: Video      cameras in this price range tend to have rather high noise, and on top of      that, they're usually 8 bits per color channel. This can result in some      highly visible shadow noise that almost pixellates when the brightness is      just on the edge of a bit-threshold. You can see some of our plates doing      this.
An HVX-200 and all its brothers and sisters in its price range simply don't have the horsepower for full pixel, high dynamic range, high resolution, uncompressed production that you need to do truly professional green screen. Green screen is ultimately a scientific process, and is one of the most demanding things you can do with your camera. Regular live-action images are MUCH easier for your camera to handle, so for regular filmmaking, your camera is fine, don't feel bad.
We have nothing against the HVX-200 or its brothers or sisters — come on, we shot a whole DVD set about visual effects on it — but it's important to really understand what the limitations are. It's fine to own your own camera for regular filming. For green screen, you should consider renting the very best you can afford — and make every decision right, which is where we come in.
Thanks for reading!
Rod

Imovie 09 Green Screen Lag

I recently built a nice green screen to use with imovie 09. Everything with imovie 09 and green screening has worked so far except... when I select the green screen option, the green screen clip's audio lags. The words don't match up with the mouth.
Any help would be appreciated

I just received my copy of iLife '09 today and installed it this evening.
Like others, I was looking forward to being able to do simple green screen editing in iMovie instead of bogging down my system with FCP...
But so far I don't see how to do it. When I pull up the "Maps and Backgrounds" box I see the blue screen and green screen, but when I apply them to my movies they just get thrown in as transitions - not behind the actual video clip/subject itself.
Any ideas? Am I doing this wrong? Will I have to go back to FCP???
(Oh, and the "faces" featured in iPhoto takes forever to process a large photo library! My 30Gb library says it's going to take 240 minutes to process.)

No Green Screen?

So, I downloaded the trial of Premiere Elements for the Mac. I am pretty impressed, except for one major thing. I noticed, from looking under the keying effects, and then searching in the help files, that Blue Screen and Green Screen effects are not available in the Mac version of PE9 (though they are available in the Windows version). WHAT? One of the major things I do with video is shooting with green screen effects. Why is this missing from the Mac version? Is this just in the trial? Is it going to be added into a future version? I can do this with almost any other Mac video editor. I actually own FC Express, and in many ways, except for this one problem, I like PE9 better. This seems like an outrageous mistake, or shameful omission.
I am really upset about this, and this for me is a dealbreaker for buying PE9 right now.
With peace,
Henry

To get around wth the Green screen omission, we can use VideoMerge and get the same result. In fact, with Videomerge + Track Matte, we can get the exact effect.. This is what I tried.
Video track 1 - Any video
Video track 3 - Video that has the green screen-ed video
Video track 2 - A video whose mask can be used.
On Video track 3, apply videomerge
On Video track 2 - apply Track Matte effect
Check if you get the same effect, I did... Hope I am not completely off track.

IMovie on iPad3 - Green Screen Effect?

Hello! My students stand in front of a green screen to record their movies. Is there a way to use saved photos and backgrounds as our background?
I'm willing to purchase an additional app if I can find one to do this.
Thanks!

I have used two external apps for green screen. Green screen movie fx and a green screen still photo app with some success both allow you to import backgrounds. I will drop the photo background into iMovie thus converting it to a movie then import that. The programs are pretty basic so I run it through a program called movie looks to do the color correction I also find green screen content on you tube and film it with my iPad on a 60 inch smart tv and my computer . This will save you if you want to do movie making on tHe cheap here is an example
http://youtu.be/L-vYZQIISvo

Strange green screen problem while playing movie

For the first time I purchase a movie from iTunes Store, As I started playing it neither I could hear the sound nor I could see the video but after much of effort of re-starting my iTunes and MacBook, it started to play but while playing the movie if I shift to full screen mode, a strange green screen appears for a second or two and then plays normally and if while playing I return back to normal screen, the green screen never goes, then again I have to stop the movie and restart iTunes to be able to play back the movie normally. Does anyone have any idea about this strange problem?

Hi Maen Abdulhaq,
“When I start games like Red Alert2 and a lot others”, ” I don't think that this is a manufacturer problem since it's very common to all those having windows 7 x64 and trying to play such games”
Did this issue occur in the whole games or just the Red Alert2 in your machines ?
“unfortunalety windows compatibility settings”
Have you tried in windows 98 or lower compatibility mode, please ensure you have choose run as an administrator?
Apart from this ,I recommend you to try this method.
create a shortcut of "Yuri.exe" (or "Game.exe" if running normal RA2), and place it on the desktop. Open the properties, and in the target line add "-dxlevel 8" to the end. It should look like this (or similar if you're directories
are different).
"C:\Program Files (x86)\EA Games\Command & Conquer The First Decade\Command & Conquer Red Alert(tm) II\RA2\YURI.exe" -dxlevel 8
Meanwhile, entering Intel HD Graphics control panel (via Windows Control Panel or right-clicking the desktop) and enter Power section. Choose "High performance" mode.
If the issue persists, I recommend you to disable one graphic card from the device manager to have a check considering you have two graphic cards.
Best regards

Can you do Green Screen/Blue Screen/Chroma Key on Adobe Premiere Elements 12 for mac?

Can you do Green Screen/Blue Screen/Chroma Key on Adobe Premiere Elements 12 for mac? If not, what are the alternatives?

JimbobT
ChromaKey, GreenScreen Key, and BlueScreen Key are not included in Premiere Elements Mac.
Some suggest Videomerge as the alternative. I do not. But Videomerge is not THE alternative.
Instead, I prefer the Difference Matte as a substitute for the 3 absent keying effects. Please check out my blog post on that which includes
the how to.
http://atr935.blogspot.com/2013/05/pe11-difference-matte-as-substitute-for.html
The suggestion has met with good results according to the feedback that I have gotten to this.
I am strictly a Premiere Elements Windows user who does not prefer Videomerge even in Windows.
Please review, consider, and let us know the outcome.
Thanks.
ATR

Special effects... Chroma key blue/green screen

Hello, im new to Final Cut, My friend is giving me his Final Cut Express HD 3.0 package and Im wondering if I'll be able to use a green screen/blue screen effect with this software, and if not, which software could you recomend.
Thanks in Advance.

Sorry Edirol if you took umbrage - my comments were intended as a light hearted quip.
As a peace offering, take a look at this old thread where I and others have made a number of suggestions to help new "chromakeyers" - not the least being how to do it on the cheap!
http://discussions.apple.com/thread.jspa?messageID=2003012&#2003012
There are also some links in it which might be worth following.
Ian.

FCPX: When applying the keyer to green screen, is there a way to change the resulting color from black to another color (cream, blue, etc)?

Currently working on a project where I shot various video tributes in front of a green screen. When using the keyer in FCPX, the resulting image is represented by a black background instead of a green one. I'd like to change that color to blue, tan or something else so that when I apply a picture in a portion of the background, the remaining background looks fine. More specifically, I plan to put images over the right shoulder of each person in the video. The image will only take up about 1/4 of the background and the rest of it currently just looks like a black screen. Thanks in advance for any advice.

Tom now I have another follow-up. So i have the original green screen with the keyer applied which, emptied the background. Now I've applied a color generator below that in the timeline and it generates a color. How do I now go back and add the photo in the upper right corner of the clip? Ultimatly the goal is to have the subject, with the color backdrop and a photo above their right shoulder.

Blue screen, or Green screen - which is less problematical

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