- Posts: 43
- Joined: Wed Jan 23, 2019 4:13 am
- Location: Australia
- Real Name: Joshua Acason
The way I generally do it is to use the standard Tracker to do a four-corner track and set its Operation to Corner Positioning. You can use the X and Y Offset controls in the Tracker tab to tweak the location of the corners if there's drift or jitter. I then compose the burn-in in whatever aspect matches the target screen, rather than in the aspect of the comp itself. In Corner Positioning mode, the Foreground doesn't need to match the resolution of the Tracker's Background, unlike a Translate/Rotate/Scale track. The image will be stretched to fill the rectangle designated by the Corner Positioning.
The Planar Tracker actually isn't very good at tracking a screen unless there's some detail on it, which would be counterproductive for the keying. So if you can easily target the corners, the regular Tracker is the way to go. Honestly, even for planar tracking I still use Mocha, which does a better job and outputs a standard Fusion Tracker.