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Working with chroma key and green screen

From: Premiere Pro CC Essential Training (2013)

Video: Working with chroma key and green screen

In this video, we're going to look at how to use the key or the Chroma keyer as you might know it in Premier Pro. Now, we're really only going to look at that one filter. If you really want to learn about serious green screening in both the shooting, as well in the post processing. You can go ahead and look at another course on lynda.com called Green Screen Techniques for Video and Photography by Richard Harrington and myself. But now let's take a look how you can green screen very quickly with a well shot image.

Working with chroma key and green screen

In this video, we're going to look at how to use the key or the Chroma keyer as you might know it in Premier Pro. Now, we're really only going to look at that one filter. If you really want to learn about serious green screening in both the shooting, as well in the post processing. You can go ahead and look at another course on lynda.com called Green Screen Techniques for Video and Photography by Richard Harrington and myself. But now let's take a look how you can green screen very quickly with a well shot image.

So, if you look at your timeline, you'll see on the left side a before, and I've created an after just so you can see what you can do with Chroma keying. And reverse engineer a more complex composite. And what we've done is just put Vanessa over her magazine cover, we have a nice green background. And we have our credit scroll. So, if you're a premium subscriber, with the exercise files, feel free to dig deep into this area, and see how we built this composite.

Jumping back over here, we just want a green screen and remove the background from Vanessa so we can see through it to the magazine cover. The filter that you want to use is called the Ultra keyer. And if you type in Ultra, you'll see that there's only one keyer there and simply drop it on top of that upper clip which is the footage of Vanessa. And in our Effects Control tab, we'll see a bunch of choices and the first thing you need to do is tell it what color you want to remove from your image or key out.

So, you can grab the eye dropper and we're going to click on this green background. And very quickly, we can see it's a very clean key, and we can see right through the green background to the magazine that we put behind. There might be a couple of little problems here. For instance, it was successful in keying out the green, but we have the edge of the background and the wall in the left corner of the image, which is on your right. If I switch over from Composite to Alpha channel, what I'm seeing is a grey scale version of what's transparent and what's solid.

Anything that is white is solid. Anything that is black is transparent, and if it's grey it's translucent, and it could look kind of muddy. So, what I want to do is be a little bit more aggressive on my key. And Premiere by default let's you switch from its default setting to a relaxed setting if, for instance, your key is removing too much of the person. Or in my case, I want to switch to an aggressive setting and it really starts removing almost all of the black material. It hasn't fixed the problem I had over here when we shot beyond the green screen area.

But I'm pretty good if I switch back from Alpha channel to Composite and I can see the magazine really nicely. The other controls that you see below the swatch are all the little sliders that you can learn in the other course to really fine tune to make sure that you have solid blacks and solid whites. But for now, the one button solution works really, really well. The next thing I want to show you is how I can remove this edge problem and that's using something called a Garbage Matte. Now, a Garbage Matte is basically a mask that allows you to remove the garbage from the side of the screen.

And if I type the word garbage into my search box, I can see there's a four, eight, and 16 point Garbage Matte. The larger the number of points, the more complex the shape you can draw. In this case, four will do the trick. I simply throw that on top of the same clip that I have the Ultra keyer on. I can scroll down and see it right here in my Effects Control tab. And I'm going to click on the wire frame icon so, I can actually see those four points to adjust them. I grab the little circles.

And if you notice when I move this above it's actually cutting off part of Vanessa. So, I want to just move it over right to the edge here because now it removes that background and some of the translucent or gray scale material. And I'll slide this over here. If I turned off the actual Ultra keyer, you'll see what the Garbage Matte does is it just gives me a much more robust crop of my image. But with it turned on and I can hit play.

>> And we're so excited to let you know that. >> I have a wonderful key in just a couple of steps.

Show transcript

This video is part of

Image for Premiere Pro CC Essential Training (2013)
Premiere Pro CC Essential Training (2013)

106 video lessons · 35501 viewers

Abba Shapiro
Author

 
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  1. 5m 35s
    1. Welcome
      1m 15s
    2. Using the exercise files
      3m 1s
    3. What is Premiere Pro CC?
      1m 19s
  2. 29m 33s
    1. Why you should watch this fast-track chapter
      1m 33s
    2. Importing media
      1m 29s
    3. Selecting shots
      2m 48s
    4. Editing to the Timeline
      4m 51s
    5. Refining the edit
      2m 41s
    6. Adding transitions
      3m 2s
    7. Adding titles
      4m 9s
    8. Adding and adjusting music
      7m 35s
    9. Outputting your show
      1m 25s
  3. 30m 13s
    1. Launching the application for the first time
      5m 13s
    2. Touring the interface
      4m 29s
    3. Customizing windows and panels
      4m 56s
    4. Choosing your editing style
      6m 5s
    5. Understanding system requirements
      3m 1s
    6. Adjusting some basic user preferences
      6m 29s
  4. 47m 5s
    1. Setting up a project and sequence
      7m 11s
    2. Understanding all the types of media used in creating a video
      5m 12s
    3. Importing files already on your computer
      3m 57s
    4. Importing pre-organized media
      3m 24s
    5. Importing media from existing Premiere projects
      4m 39s
    6. Importing card-based media
      6m 11s
    7. Importing Final Cut XML files
      2m 36s
    8. Organizing your media
      6m 13s
    9. Reconnecting offline media
      7m 42s
  5. 18m 54s
    1. Basic editing overview
      4m 38s
    2. Previewing and marking media in the Project panel
      6m 12s
    3. Previewing and marking clips in the Source panel
      3m 9s
    4. Creating subclips
      4m 55s
  6. 9m 19s
    1. Marking and targeting destinations in the Timeline
      3m 35s
    2. Moving clips in the Timeline
      1m 27s
    3. Trimming edit points in the Timeline
      1m 24s
    4. Splitting and deleting clips
      2m 53s
  7. 24m 59s
    1. Performing an overwrite edit
      5m 7s
    2. Performing an insert edit
      3m 20s
    3. Using swap edits
      2m 37s
    4. Using multiple tracks
      4m 24s
    5. Targeting specific tracks in the Timeline
      4m 8s
    6. Cutting a B-roll sequence
      5m 23s
  8. 20m 16s
    1. Looking at three-point edits
      5m 26s
    2. Performing replace edits
      6m 5s
    3. Linking and unlinking audio
      4m 48s
    4. Working with markers
      3m 57s
  9. 24m 49s
    1. Performing ripple and roll edits
      5m 53s
    2. Using slip and slide edits
      6m 34s
    3. Performing J and L cuts
      3m 32s
    4. Looking at the Trim Monitor window
      2m 47s
    5. Increasing trim efficiency
      2m 11s
    6. Tips and tricks for trimming
      3m 52s
  10. 27m 28s
    1. Taking control of your Timeline
      4m 7s
    2. Adding video and audio tracks
      4m 32s
    3. Changing track visibility and locking tracks
      3m 22s
    4. Rendering media in your Timeline
      5m 34s
    5. Using the History panel to undo multiple actions
      2m 22s
    6. Creating keyboard shortcuts
      4m 19s
    7. Creating buttons
      3m 12s
  11. 29m 43s
    1. Exploring audio in Premiere Pro
      6m 32s
    2. Adjusting audio levels of clip
      7m 17s
    3. Keyframing audio levels of a clip
      4m 33s
    4. Mixing audio
      7m 34s
    5. Fixing out-of-sync audio
      3m 47s
  12. 20m 56s
    1. Importing still images
      4m 57s
    2. Working with stills
      6m 36s
    3. Animating stills with keyframes
      4m 49s
    4. Animating Photoshop files
      4m 34s
  13. 8m 59s
    1. Changing clip size, cropping, and position
      5m 16s
    2. Animating the position of clips over time
      3m 43s
  14. 14m 43s
    1. Applying basic video and audio transitions
      3m 1s
    2. Modifying transitions
      8m 6s
    3. Applying multiple transitions
      3m 36s
  15. 47m 2s
    1. Applying video effects
      2m 42s
    2. Modifying effects
      4m 47s
    3. Combining multiple effects
      8m 30s
    4. Keyframing your filters
      6m 22s
    5. Adjusting existing filter timing
      5m 56s
    6. Applying effects to multiple clips
      2m 31s
    7. Copying and pasting attributes
      4m 25s
    8. Creating and saving effect presets
      6m 46s
    9. Applying audio effects
      5m 3s
  16. 25m 36s
    1. Looking at the Warp Stabilizer
      5m 14s
    2. Working with chroma key and green screen
      4m 45s
    3. Using color correction tools
      6m 55s
    4. Looking at the Lumetri color looks
      4m 6s
    5. Using adjustment layers to save time
      4m 36s
  17. 27m 41s
    1. Fit-to-fill editing
      6m 41s
    2. Stretching a clip
      4m 15s
    3. Looking at the Clip Speed/Duration dialog box
      9m 17s
    4. Making variable speed changes
      7m 28s
  18. 15m 29s
    1. Creating a static title
      4m 35s
    2. Creating a lower third title
      2m 57s
    3. Creating rolling and crawling credits
      3m 40s
    4. Using Photoshop for titles from within Adobe Premiere
      4m 17s
  19. 22m 2s
    1. Introducing multicam
      2m 57s
    2. Creating a multicam clip with timecode and sync points
      5m 13s
    3. Creating a multicam clip using audio waveforms
      2m 55s
    4. Editing a multicam clip in the Timeline
      6m 50s
    5. Refining a multicam edit
      4m 7s
  20. 21m 38s
    1. Finishing techniques
      8m 35s
    2. Exporting a master
      6m 52s
    3. Exporting for devices and the web
      6m 11s
  21. 16m 55s
    1. Moving and copying a project
      7m 46s
    2. Archiving a project
      6m 49s
    3. Preparing and integrating your workflow with non-Adobe applications
      2m 20s
  22. 1m 35s
    1. Next steps
      1m 35s

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