How to export green screen footage.

I recently shot on a green screen, i keyed it in after effects with keylight but want to do color correction in FINAL CUT. when i export the video it comes out with a black background instead of transparency so it doesn't allow me to composite footage over the background so i can't color correct or do anything because the clips with the black solid background are useless. how can i export the already keyed footage so that i keep the transparency for the background?????
thanks

This thread has become a mess of confusing information. Just to clarify a few points:
1GB RAM is not really enough to run AE well. Your purchase of 4GB is a smart move.
AE manages its own RAM usage, so its very possible that it may only use 20% of available RAM, depending on the contents of your project and the amount of precomping etc that you've used. Once you have the extra RAM, enabling Multi-Processor rendering is the best way to utilize RAM during the rendering process.
The "Secret" option mentioned refers to a secret preference menu in AE, which is enabled by holding the Shift key while choosing preferences. Unless there is clear evidence that your system is running out of RAM while rendering, there's no need for you to use the Secret prefs menu.
The "3 GB switch" referred to is not relevant in your case - it applies strictly to Windows XP users.
In summary, install the extra RAM and activate multi-processor rendering to speed up your renders.
Export your keyed footage using the "Lossless with alpha" Output Module in the Render Queue. This will provide transparency info when you take the footage to FCP.
Alternately, as suggested by Mylenium, do the colour correction within AE.

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How to keyout harsh shadows from green screen footage tutorial

Hello!!
I have shot a green screen footage outdoors an two clips where shot with the sun making some very harsh shadows that are impossible to key out. I am attaching two photos so that you can see what I mean. I there any other way to go around this problem without rotoscoping because unfortunately it' s not an option for me to reshoot the scene. Maybe lume key could help but I am not sure...
Any suggestion would be appreciated!! The first image is the original one. The second is with Keylight only and the third is with Keylight and Luma Key together...
Thanks
Yiannis

Duplicate your layer, key once for the light green, key a second time for the dark green, Output the mattes and combine them to create the final matte. Pre-comp the two shots and use as a garbage matte for the final key by adding a matte choker and making the pre-comp a track matte for your final key.
There are a zillion other ways but Here's what the combined matte looks like from your screenshot.

Noisy blacks in keylighted green screen footage

A friend of mine hired me to do some effects for a pepsi commercial (Video Production 4th quarter final project). He gave me green screen footage of dancers, and he wanted me to key the green out, put them on a black background, and make light streaks coming from their hands. I can do all of this, but I'm having trouble getting it to look perfect. He shot on a dvx100, 24p, and I'm certain he shot at a pretty slow shutterspeed, because I'm losing half of his arm when it moves quickly. I don't think this is fixable (if it is, let me know), but it shouldn't be too distracting. My main concern is I've got a lot of noise in blacks and dark colors, mostly the male dancers jeans. I have to set the screen matte clip black to about 50 to get rid of some noise around the dancer. Is there any way to reduce the noise within the pants/dark colors?
Heres a test shot I just exported:
http://vimeo.com/1721038
Any additional advice or tips on all the effects in this project would definitely be appreciated. Thanks!

thanks for the tip about the noise, I'll try it.
As for the light streaks, your right it does look a little too 2 dimensional. I used Kramer's tutorial to create the light streaks and parent them to a null object, i made the streaks a 3d layer, but I can't figure out how to make the streaks move in 3D space with the dancer's hand being a 2D layer. The only thing I could think of is pushing in with a camera, but I would need to sillouette the dancer to prevent visible pixelation right? Or is there a way where I can move the light streaks in 3D space without sillouetting the dancer?
Thanks ahead of time!

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.

How to use Green Screen option?

Sorry this is such a general question, but I have very limited internet access here at work (can't even access Google) and I would like to figure this out before I leave for the day so I can grab what I need on the way home.
We are making weekly comical "newscast" type videos, and we have been using PhotoBooth to make it look like we are in a news room.
I would like to stop using PhotoBooth (due to the obvious extreme limitations in video/audio quality) and use the green screen option in iMovie 09.
Would anybody be so kind as to give a brief couple of paragraphs on the best way to accomplish this?
I have seen the option pop up when inserting a clip on top of another, but which one is the footage/image to replace the green area... the original clip or the overlayed clip?
And is there a specific shade/type of green that works best? Or can I just pick up a dozen yards of general "crayola" green fabric to cover a wall?

I have tried but haven't had much luck. Although I am having a problem with Snow Leopard and iMovie right now. That may be affecting my success. Here are the instructions out of iMovie help.
To use green-screen effects to superimpose video:
Record video in front of a solid green backdrop, and then import it into iMovie.
When you record, for best results do the following:
Use a pure (highly saturated) color of green for the backdrop.
The best color of green to use is often called “chroma key green” in paint and cloth.
Make sure the subject doesn’t have any green clothing, and don’t include anything green in the shot, other than the backdrop.
If possible, use multiple lighting sources to eliminate shadows on the subject being recorded.
Include a moment at the end of the recording with the subject out of the frame. This indicates to iMovie what should be left out when the video is superimposed.
Choose iMovie > Preferences, click General, and then make sure Show Advanced Tools is selected.
In the Event Browser, select video that you recorded in front of the green backdrop.
Drag the selection directly over a clip in your project (video, solid color, or animated background clip), and release the mouse button when the cursor displays a green plus sign .
Choose Green Screen from the list of options that appears.
The green-screen clip appears with a green border around it above the video clip in your project. You can drag it to a different spot to reposition it, or drag the ends to lengthen or shorten it.
To more effectively mask areas of the green-screen clip, select the clip in your project, in the viewer click Cropped, and then drag the handles at the top of the viewer to more tightly enclose the subject of the video.
Anything outside the highlighted area in the green-screen clip is removed from the picture. Be sure not to crop out areas that the subject moves into at any point during the green-screen clip.
To produce a better-quality effect, double-click the green-screen clip in your project to open the inspector, then select “Subtract last frame.” iMovie uses information in the last frame to determine what to subtract from the finished clip.
Selecting “Subtract last frame” works only if you included a moment at the end of the green-screen footage with the subject completely out of the frame.
To watch the clip, click the Play Clip button in the viewer.

Hey all - I am just learning version 6.0.6 - can't use green screen footage

When I try to use chroma key (edit green screen footage I've shot) the option is greyed out. Thanks for the help!

Sorry to break it to you, but FCP6 is not FCPX. Go to the Final Cut Studio forum with your question.
Er, this discussion showed up as an FCPX discussion when I clicked on it. Not sure why, but i apologize if you posted it correctly in the first place....
Message was edited by: Paul Cuciti

Exporting keyed out green screen footage

I've keyed out the green screen from my footage of someone standing. I now wish to export it and send to someone else to do all the graphics behind the person.
I've tried exporting as a quicktime but when they recieve the footage they can't put any background SFX in.
Help anyone?

to export your keying you will have to make sure that your export includes the corrcet alpha channel.
look in your wireframe/ image drop down menu above the clip viewer and select alpha
you will see that by keying out you are removing the alpha (white elements) from the area you dont want to keep ( ie. the blue screen) you will need to provide your fx guys with this info.
try exporting your seq as a quicktime whih supports alpha info (like animation) and choose millions + in the colors to include the alpha.
or you can provide the alpha info seperately on a qt of the same clip duration - copy the clip ad use the extract filer to copy the alpha ino to the RGB channels and provided your FX guys with both the normal clip and the B+W clip - if they know what hey are doing they can put these clips back together in their FX package to just keep the non-bluescreen areas of the clip.
oes that make sense

How do I make green screen footage tiny - need tiny people on my video

Ok....I've looked everywhere but I'm not having luck.
I want to take screen screen footage (people dancing) and make them tiny to place in the corners of my video.
Where do I go for tutorials on this?
Thanks.
BTW I love 6.0!!!!

Here are three quick tutorial sources to give you a start on green screening. After you do the green screen then you just have to play with the motion effects on the clip to get it to the size and position you want.
http://blogs.adobe.com/kevinmonahan/tag/green-screen/
http://tv.adobe.com/watch/learn-premiere-pro-cs5/creating-a-green-screen-key-using-ultra-k ey/
http://premierepro.wikia.com/wiki/Tutorial:How_to_Make_a_Green_Screen

Exporting Green Screen as Transparent for Interactive PDF

I am running CS5 Indesign and Premiere Pro CS5
I have a coach on green screen and keyed out the green and have a black background. I am wanting to place the coach only into an Indesign file and have him floating in front of the eventual interactive PDF. I have tried exporting through FLV and enabling the alpha encoder but have not had any luck with it working. Am I missing steps or is there a seperate way to make a background transparent? Thanks!

Todd
I am able to have footage behind my FLV when I import it. I used other footage and even a JPG to double check. The transparency is there it just doesn't export it seems like. I appreciate the help and any other help from other users. I guess the answer is with the interactive PDF and Indesign.

Getting cleaner edges with 4:1:1 miniDV green screen footage

I understand 4:1:1 miniDV footage is not so good for green screen stuff. From what I've gathered searching google, it helps to blur the U and V channels before applying a color key. How do I do that in After Effects? Does anyone know any other tricks?

You can transform the colorspace using the Channel Combiner effect. Just don't forget to transform it back after you've done your blurs. You can further refine this technique by separating the transformed channels using e.g. Shift Channels and treating each component separately. You can properly recombine them by using e.g. the Add (RGB) or Luminance (YUV) blendmode. Anothr possible trick is to duplicate the layer and use blendmodes like Color in combination with your blur, then key the resulting pre-composition. Still, the best solution (if you do this regualarly) is to look into some specialized deartifacting plugins. A good generic point to start is RevisionFX SmoothKit collection which offers a wide selection of adaptive blurs that can be used to even out the background (Median) or soften block artifacts after the keying. Plus it has the advantage of a great variety of otehr creative uses... Also check out Primatte and its built-in deartifacting mechanisms. I'm sure you can also find simialr complementary tools from other plugin vendors.
Mylenium

Flipping green screen footage causes error with background

Hi,
I have created a short 30 second video using a green screen. I realised after that I needed to flip it (I was point the wrong way!) So I dragged it into my project and then flipped it. THen when I dragged the background picture in and choose "green screen" the image is all weird. I try to change the efects, colour etc but it doesn't seem to work.
If I drag the back ground image in first and then the green screen video they merge OK but I cannot flip the green screen video once it is in project with the background image already there.
Any one have this problem and know how to fix it - or do I have to reshoot the video and point the other way!?
Thanks
Cheers
Tracy

CantonVideoMan wrote:
Hi bogiesan,
Thanks for the help.
My footage is actually shot with a green floor. The problem I'm having is the final product needs to be an actor walking out with a transparent background, but casting a shadow on the floor. So that the shaow will show up no matter what background the customer decides to use the video with.
If I try applying a drop shadow or a Radial Shadow the shadow shows up BEHIND the actor not below. I must be making this 10 times harder than it needs to be.
Any Advise would be appreciated.
Thanks again,
Bob
I'm not grasping the issue, then, sorry. Just use the shadow you have captured. Setting a chromakeyer to pass the shadow is not difficult.
The problem with faking a shadow is, yes, it's ten times more difficult than getting it in the original shoot because of all the problems we've discussed. with a shadow layer there is not interaction with the feet and the 3D projection is not realistic enough to be accepted by an audience; it will always look fake. You CAN create a projected 3D shadow by carefully placing a light in a 3D scene and placing a copy of your matted character perpendicular to the light source and setting the layer to project the shadow only. But it still is not real.
bogiesan

How to fix green screen blotches on teeth in imovie 10.0.7

There are green blotches on the individual's teeth from the green screen used. I need to know how to fix in imovie 10.0.7.

"Did you have spinach for dinner?" ... SCNR!
And such a nice smile, 'priceless' and most probably not to be re-done, right?
sorry, to say, but that reaches the limits of lil' iMovie.
You can not manually adjust the color-key in iMovie, as you can do in FCPX, nor does it offer any 'masking' features as Motion would...
.. FCPX offers a 30d free and fully functional (no watermarks etc) trial ... but then you have to learn how to handle color-key in that pro app ... which is not a beginners task ...

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Hi Guys,
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Hi Chakra.
please take carte that a screen consists of layout, fields and flow logic. Get all components using this form routine (taken from excellent useful SAP report RPR_ABAP_SOURCE_SCAN):
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form get_dynpro_flow_logic.
data: dhead like d020s,
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endform.                               " GET_DYNPRO_FLOW_LOGIC
Regards,
Clemens

Reflection when exporting green screen to QuickTime in iMove '09

I am using iMovie '09.
I am exporting a talking head using QT h.264 with best properties. I have overlayed the talking head on a black card background provided by iMovie. I need to import the quicktime film back into iMovie so I can put Picture in Picture on the black and have transitions. However, the greenscreen exports to quicktime with a flipped image above the head, i.e. a reversed neckline and shoulders making an hourglass figure with the talking head middle. Bizarre. Any suggestions on solving this?

+the latest Quicktime for my old PC (P4 2.0) and all I get is a green screen when playing back Quicktime movies+
I'm assuming you've got XP rather than Vista here. If so, try the "Disable Direct3D acceleration in QuickTime" section from the following document:
Troubleshooting iTunes for Windows XP and 2000 video playback performance issues
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Be sure to try a Reset first
http://support.apple.com/kb/ht1320
This "reboots" the iPod. If that does not help, try doing a Restore on the iPod in iTunes (from the iPod's Summary tab). This erases the iPod, re-installs its software, and sets it to default settings.
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How to export green screen footage.

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