Green Screen DirectionsPURPOSE: Capture photos and video in front of a “green screen” background that can be easily “erased” so that your photo/video can be super-imposed in front of another background in iMovie.

Taking a Green-Screen Photo or VideoNOTE: For the best effect, room for movability and versatility with green-screen poses, you may take photos/video in front of a green-screen backdrop made of green cloth, paper, plastic tablecloth, poster board, paint, etc. (However, when/if that is not possible, you may also import a “virtual” green screen as a background into the Photo Booth application on your Mac. See below for Photo Booth directions.)

Setting “Advanced Tools” & Using Green Screen in iMovie:! 1) To use Green Screen in iMovie, click on the word/menu “iMovie” > choose “Preferences.” In the iMovie Preferences box, highlight the “General” icon, then make sure the “Show Advanced Tools” box is checked. 2) Just drag your photo or video taken in front of a green screen overtop another background photo or video in iMovie. When the box of Advanced Tools appears, choose the “green screen” option. The green background will “disappear,” and the green-screen image will be super-imposed overtop (or into) the bottom photo/video. 3) IF the green screen video is too transparent in places, “sparkles,” and/or the color is wrong, etc., click on the tool wheel on it, go to “Video Adjustment” and try adjusting the saturation first, or possibly the brightness, contrast, and/or color levels.PRACTICE: In iMovie, super-impose the turkey into the background photo of the birds on the beach.You can use Command-Shift-4 to take screen shots of each image for dragging into iMovie. (See more turkey poses at the bottom of this document.)

Using the “Alpha” Tool with Green ScreenPurpose: The “Alpha” tool provided in Keynote (and Pages) will erase a green background --or other background colors -- from around a still image so that the image can then be resized and positioned in a specific location within another photo.A) Import both the green-screen photo and the desired background photo onto a blank white Keynote

slide.B) Highlight the green-screen photo, and click on the “Alpha” tool icon. WIth the plus sign, you will be

able to click on the green color (or other unwanted color) that you want to make transparent so that it “disappears” from around your image. (Warning: If you drag too much, youʼll get rid of more color than desired, perhaps from the image you want to keep. If so, start over.)

C) Drag the edited image overtop of the background photo. If it disappears behind the background photo, go to the Arrange menu at the top of the Keynote page and choose "Bring to Front."

D) GO to Format>Mask to resize the background photo and make it cover the full Keynote screen, so that it shows up well/fully in iMovie.

E) Resize the image you are placing in the background photo, and position where desired.F) Save the final slide to import into iMovie OR take a screen shot of it (command-shift-4)PRACTICE: Use the “Alpha” tool in Keynote to make the green background around the turkey image transparent. Then, resize the turkey to the desired proportion and super-impose him into an exact desired location on the background photo of the birds on the beach. (You can use Command-Shift-4 to take screen shots of each image in order to use them.)

Using Green Screen Backdrop in Photo Booth:PURPOSE: When is not possible to stand in front of a real green screen background to take a photo/video, you may use a “virtual” green screen imported as a background into the Photo Booth application on your Mac. A) Copy the solid green-screen background image below / Command-Shift-4 to take screen shot of it.B) Open Photo Booth. Click on “Effects” and use the right arrow to scroll over to the User Backdrops. ! Drag the green screen over into one of the blank user !backdrops.C) This next step works best if you are in a location without glare from windows or bright lights, etc. ! With your Photo Booth set to take a still photo (see single square button), set your laptop on a ! steady surface and DO NOT TOUCH THE LAPTOP OR MOVE THE SCREEN. Any movement !will ! mess up the green screen backdrop. Step out of the camera view, and click on the green ! screen User !Backdrop; then SLOWLY move into the camera view so that all you see is !yourself ! in front of a solid green backdrop. Click to take the photo. (IF your backdrop is not solid green, it ! could be because there is too much glare or movement. Try again.)D) Following the same procedures, now take a video of yourself in front of the green screen backdrop by selecting the video film button that is third from left in Photo Booth.

GREEN SCREEN PROJECTS / IDEAS: 1) Geography: Be a tour guide by super-imposing yourself into photos/videos of a certain city/location.2) If you could go back in time, what time would you go to and why? If you could go anywhere, where would you go and why? If you could be anything, what would you be and why?3) If you could change something in history, how would you change it and why?4) To the future: I wish I had recycled..., etc. What changes would you make for the future?