Join Mark Christiansen for an in-depth discussion in this video Track a mask directly with Tracker2Mask, part of After Effects Compositing 06: Tracking and Stabilization.
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- In this lesson, I'm going to use motion tracking to remove this guy from the shot. Now, I know that I said that you cannot apply a track directly to a mask in After Effects and we've seen how the mask tracking tools have difficulty in situations where there is irregularity or interruption to what's being tracked. However, there is a third-party tool called Tracker2Mask that will allow us to apply this track to this mask.
So, if you haven't already installed it according to the instructions in the intro for this section, please do so. I'm just gonna open it up now, and we'll just let that float as a panel. Now there's a lot of unfamiliar stuff in here, so for this lesson, I'm going to keep it very simple. We're just going to apply one track point to this mask. To do that, I'll just reveal the mask here. The track point is set to the handle of the chair and what's useful about that is it's the only edge that really matters.
We've taken care of the top of the couch and everything else is just against this neutral background, but here, where the hand is holding the chair, the more that we remove, the more we're gonna have to put back, so we really want this to be pretty tight and tracked in. So, to track this mask, I'll choose the mask itself and the track point, and that's all I need.
I'm starting sort of in the middle so I can go either forward or backward. I'll start by going backward. You're not gonna see the view update as it tracks, but you can see that the mask is tracking away. If I had used multiple points, the mask would also deform with them and the only reason that I'm not doing that here is I need to keep this simple and not make this whole course about this one tool. If you want more training about this tool, it's available at AEScripts where you also get the tool itself, so I encourage you do to that.
Here, I'm going to move the endpoint in and then track forward to here, the endpoint being that one which corresponds to the end of the track. And there you have it, we have a mask that pretty effectively follows that crucial edge right there.
Let's just check it out by enabling the mask and inverting it, and now you can see the whole, I'll just close this, that's been created here, so we're going to be filling in a neutral background to fill that and just replacing that one part of the chair and a little bit of table that crosses.
So that's truly the bare minimum of what Tracker2Mask can do, but it is a great help here. Now, we'll look at another script that's valuable to increase your productivity with tracking in After Effects.
Here, Mark Christiansen shows how to use the five different After Effects trackers, customizing them to work best in the situations that motion graphics artists encounter most often. He covers the fundamentals, as well as opportunities to think outside the box, especially when an automated approach won't work.
- Why point track?
- Recognizing trackable points
- Offsetting a tracker
- Applying the track to a matte
- Using nulls and third-party scripts to create track mattes
- Tracking and stabilizing objects and planes
- Automated tracking
- Applying 3D tracks