Join Ian Robinson for an in-depth discussion in this video Creating a garbage mask, part of Mograph Techniques: Retiming and Tracking Footage.
Before we attempt to color correct our footage or even blend in graphics over the…top of our footage we need to make sure that we have a clean backplate.…And if we scrub through our clip, you'll notice that the DP's hand pops right into…the middle of the scene. So we're going to fix this relatively…quickly by using a garbage mask. We're also going to pull a frame from the…clean shot and use that as our backplate. So if we move our current time indicator…to the beginning of our comp notice we have a really strong shadow on our soccer…player and we have the DPs hand in the lower corner of the image.…
Well this isn't going to be a good clean backplate...…Let's move our current time indicator to the end of our project.…Here we have beautifully well-lit graphs, and the shadow's out of the way, as well…as the hand off the screen, so this will be our perfect back plate.…Now as I'm noticing our work area is set at 8 seconds, so let's change the work…area end to the end of our composition while we're down here.…
- Analyzing a rough cut
- Tracking with mocha
- Adding and animating spheres
- Creating an animated logo with particles
- Adding dynamic motion
- Color correcting the back plate
- Blending particles emitters
- Retiming layers with prerenders
- Adjusting speed with Timewarp
Skill Level Intermediate
1. Isolating the Base Layer Video
Analyzing the rough cut2m 7s
2. Tracking Footage
3. Adding Graphics
4. Adding Color Correction and Finishing Touches
Next steps1m 21s
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