Want 25 green screens in your computer lab?
Thanks to Tom Barrett for publicizing, on Twitter, the TeachMeet09 Ed Tech Roundup. I happened to catch one tweet and watched a two-minute tutorial about greenscreening and iMovie 2009 by Kevin McLaughlin. It was so easy, once the advanced tools were turned on!
I started thinking about the use of this in our technology classes, and suddenly realized that one could put a green background (#00FF00) as one of the user-created backgrounds in PhotoBooth on the Mac, record the greenscreen video, and then use Kevin's tip for using that in iMovie. This way, each student has their own green screen!
Steps
1. Import a 500x500 green (color #00FF00) solid color JPEG as the background in one of the effects boxes in PhotoBooth.
2. Record the video in front of this green background.
3. Save the MOV file.
4. Import the PhotoBooth MOV file into iMovie.
5. Import the background video into iMovie.
6. Use Kevin's tips.
(I realize you can import the background video into PhotoBooth and record yourself on top of it, but keeping the two videos separate gives you the option of applying additional effects and options to them in iMovie.)
Here is my feeble attempt to show you a quick finished product following the above steps.
I started thinking about the use of this in our technology classes, and suddenly realized that one could put a green background (#00FF00) as one of the user-created backgrounds in PhotoBooth on the Mac, record the greenscreen video, and then use Kevin's tip for using that in iMovie. This way, each student has their own green screen!
Steps
1. Import a 500x500 green (color #00FF00) solid color JPEG as the background in one of the effects boxes in PhotoBooth.
2. Record the video in front of this green background.
3. Save the MOV file.
4. Import the PhotoBooth MOV file into iMovie.
5. Import the background video into iMovie.
6. Use Kevin's tips.
(I realize you can import the background video into PhotoBooth and record yourself on top of it, but keeping the two videos separate gives you the option of applying additional effects and options to them in iMovie.)
Here is my feeble attempt to show you a quick finished product following the above steps.
Labels: Kathy Schrock, Kevin McLaughlin, TMETRU09
posted by Kathy Schrock at 4:12 PM
4 Comments:
This is what teachmeet's are all about, spreading ideas to others. It's great to see that my presentation has led you to trying out your own green screen effect and I'll look forward to reading how it goes with your class of students.
We set up a green-screen during the holidays and invite students to come down to the studio and create "video postcards" to email to friends and family or embed in myspace/facebook pages.
The music/sound, backdrop, and video are all created by students.
They have a lot of fun and, since we are a charter school, the viral promotion that it generates is great too.
Thanks for this post! I didn't even know this was possible in iMovie. I just tried it out. I used the green screen in the Photobooth and embedded it over a pre-existing movie (clicking on green screen option), but the green screen images all end up semi-transparent! It's still an awesome effect, but would you happen to know a quick fix?
Mel, I don't think there really is a quick fix. The best thing to do is to shoot your photobooth video with a solid (preferably green) background that is well and evenly lit. The software will then have only one color to pull out of the background and you won't see little holes and transparent spots in your video - like in Kathy's example. Also, make sure you are not wearing clothes the same color as your background or you'll be invisible in places! Good luck...
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