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Solving Difficult Shots
Solving is more than just pressing a button, especially not if you have a difficult shot to solve. It requires careful examination of the camera path and a little experience with how and where to add extra tracks, where to delete markers, and how to tweak the tracking influence to get a decent solution. This video will help you understand how to approach the solving of tricky shots.
12 comments
i have another question. i´ve seen that once you track your points you have to chose 3 markers and hit "Make Floor" in order to blender know. i have seen that this 3 markers must to be in the same axis. But what if i am trying to track an uneven terrain ? like if i am on a mountain or some place where there is no a plane floor?
@unocastillo: If the terrain is very uneven, you can also try to align the camera by hand. You don't have to use Make Floor. You can also just select a marker as the origin of your scene and rotate everything so that it matches. I like to use the 3D Cursor for that, which i set to the origin to the scene, active 3D Cursor Pivoting in the pivot menu, grab the camera (whilst looking through it), and simply igt G twice, in order to use trackball rotation for the camera object. That is often a good way to align the camera to the scene.
@sebastiankoenig: thanks a lot for answer. thanks a lot for your time (Y)
Hi. i am very frustrated. I want to track a difficult shot. But my markers get lost as soon as i hit the tracking button. they deform and get lost, even in parts that it doesn´t have too much shake or blur.
i know that some times you have to track almost all the shot manualy. but i think i am doing something wrong.
is there any chance that i can show you my footage so you can give me any advice?
thanks in advance.
@unocastillo: Post a link to the footage, you might get some tips (can't guarantee though).
@unocastillo: Well, this is again very unfortunate footage. You want to place the 3D object in the middle of the road. Yet you move the camera during the shot in a way so that nothing from the street is in the view. Also, during this turn there is little to nothing in the foreground, so you have very little parallax, which makes solving very difficult (or impossible). That's why you have that many jumps. Just end the shot before the turn! By the way: In movies you almost never see shots like this. And for a good reason! Usually they use dollys and steady cams so they can be sure to get a good track. Often camera shake is added in post. Plus, they cut a lot! So the sequences are much shorter, making tracking a lot easier ;)
@unocastillo: Hello?
@sebastiankoenig: hi i am lossing my mind here.
I am tracking this footage. You can see there is a series of jumps, but i don´t know how to get rid of them. I study your examples, but i can find any solution, if y fix some track and solve camera everything falls apart. do you think you can help me? i can send you my blender file if you want.
@sebastiankoenig: yes. i don´t know why i always end up on impossible tasks :(
@unocastillo: Hey Uno! That is a really tricky shot to track. The camera is shaking like crazy, and at the end you have fast pan up. That's almost like a worst case scenario. You would need large markers with a very large search area. But it won't be an easy solve, that's for sure ;)
@fsiddi: thanks. here it´s the clip i wan to track
Hi. i am very frustrated. I want to track a difficult shot. But my markers get lost as soon as i hit the tracking button. they deform and get lost, even in parts that it doesn´t have too much shake or blur.
i know that some times you have to track almost all the shot manualy. but i think i am doing something wrong.
is there any chance that i can show you my footage so you can give me any advice?
thanks in advance.
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