Join Chris Meyer for an in-depth discussion in this video Adjusting Propagation settings, part of Screen Replacement with After Effects and mocha AE.
…When working with Rotobrush, after you've defined your base…frame, but before you start creating more strokes earlier…and later in time, an essential step that many…people miss is improving the rotor brush propagation settings.…This basically tweaks the algorithm inside Rotobrush, that helps…it propagate, the space-time information, earlier and later in time.…
The defaults are okay, but hey, the better you can make…this algorithm work the fewer corrective strokes you'll have to make later.…In other words a little time now, will save you a lot of time later on.…To tweak the propagation settings, you want to look at…a couple frames, two or three frames earlier and later…in time than your base frame, just to get an…idea of how Rotobrush is working with these default settings.…I'm going to go two frames earlier to start,…set my Layer panel and zoom in so I can see exactly what's going on.…The first thing to play with are…the different color detection algorithms inside Rotobrush.…
What it's looking at, to determine if a pixel is foreground or background.…
This course was created and produced by Chris and Trish Meyer. We're honored to host this content in our library.
- Tracking in mocha AE
- Corner pinning in After Effects
- Rotoscoping with Roto Brush and Refine Edge
- Matching color and depth of field
- Reversible stabilization with Warp Stabilizer VFX