These two chapters talk about everything you need to know about tracking markers and matchmoving on a green screen.
We first talk about color, size and shape of tracking markers, then about photogrammetry and depth-placement, and finally we walk through an entire Virtual Set process from start to finish. Then we wrap by talking about how to prevent emergencies, and what to do if a shot ever fails.
This is almost a half hour of training, so get a cup of coffee!
Want to play around? Download the free Green Screen Plates!
This is part II of How To Place Tracking Markers.
Want to play around? Download the free Green Screen Plates!
Crowd replication seems so simple, but it's actually a science. Many people rely on difference keying, which is a terrible method.
This chapter talks about how to do crowd replication that is easy to composite, how to maintain station-points and crowd continuity, how to use motion control, and how to do massive crowds with a million people using Particle Instancing.
This is one of many chapters on matching lighting, which is a critical aspect of visual effects, and it has to be done right on the set -- it can't be fixed in post.
This chapter covers a very difficult situation, which is having shadows fall on a live-action person on a green screen. It would be dangerous to shoot a plate like this without careful thought, because an unusable plate could mean a reshoot..
Things like corner-pinning and replacement used to be done with 2D tracking, which was really an awful way to track. But a Planar Tracker tracks the whole surface instead of just points, and that results in a whole new set of rules for how you have to shoot inserts and elements that have to be replaced -- which is all the time.
This chapter covers in great detail exactly what to do on the set for this to be easy and safe.
Want to try your hand at tracking these shots? Many of them can be downloaded for free on the Tracking Plates page!
These links a for MP4 files in 720p for offline viewing (right-click and select Save Target As...):