The higher the number, the worse the track. Now let's go to the Solve tab and click Solve Camera Motion. Here's one right here that instantly just pops out of nowhere, so let's just get rid of that too. See if you can eyeball any other weird tracks that are happening and just get rid of it really quick. Some of these are awful, like this one right here. Now, as I said earlier, some of the tracks are actually pretty good. Okay, click on Save User Settings, and let's get back to it. I put mine up to eight gigs, because my machine has 16. So go up to File, User Preferences, go to your System tab, and raise up your memory cache limit. If for some reason it doesn't fill up the entire bar with this nice little purple, that means it's running out of RAM. Also, did you notice how your footage played back a little choppy? Well, one thing you could try to do is click on Clip and go to Pre-Fetch Frames. Don't worry, we can quickly clean those up. You also might've saw a few dots fly across the screen. They indicate where the tracking point came from. Now, if you're watching this track happen, you'll note all of these little red dots. And finally, go to the first frame and hit this Play button to start tracking. You could also turn on some other things if you really want to see everything, but I'm just going to leave it on those. The next thing you want to do is to make sure that you have your little search marker display up. Turning on Normalize will solve many of those problems. That's going to account for any slight shifts in illumination, lighting, maybe exposure changes on the phone, you never know. Okay, now let's scroll down a little bit on the tracking side and make sure I click on Normalize. That's going to change the sensor size, but if you don't find your own camera in here, you can just type in your own sensor size. Now, since I used an iPhone, I'm going to pick iPhone 5. The next thing you need to do is to go down to your camera and set what kind of camera you shot this on. Now we've added a whole bunch of tracking markers, but we're not ready to start solving this jut yet. Why don't you take a few minutes and add as many as you can. Now go ahead and add a couple of tracks, and be mindful of tracking corners with lots of high contrasts. So let's delete it, and use a higher search size, like, say, 100. That's not good, because if the footage is moving really quickly, it'll move outside of the search size and we'll lose the track. It makes a smaller box that goes around my tracking point. Now, if I lower my search size, you can see what that does. Let me open my track, and let's just zoom in and find a really high-contrast area and control click. Now, one of the first things I like to do is to raise my search size, and I'm going to describe that here in a second. You only need eight points to track throughout the whole video footage, or Blender won't work. And then make sure that whatever video you do end up shooting has a lot of high-contrast corners. Add in your video, and again, you can shoot this on a smartphone, right here. Now, the first thing you want to do is make sure you have motion tracking on as your layout. And this week's Blender's Tips, Tricks and Techniques, we're going to show you how to take some footage shot on an iPhone and add a monkey to it. Camera tracking in Blender is actually incredibly easy.
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