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Boujou & AFX
Hello all,
I have recently been trying to use boujou files a friend produced for me.
What i’ve been trying to do is put around small objects that arent in the original footage while a 2D pan occurs(zoom in/out+translation).
He gave me both a .ban(havent been able to use that one) and a maya camera file.
At the moment what ihave in my composition is
1.the original footage(that shouldnt change)
2.the overlay, scaled and positioned like it should at the frame 0(everything starts at 0, no offsets)
3.the overlay, scaled and positioned at position n(where n is the last frame), but not shown since i already have #2
4.the camera imported from the maya fileIf i activate the camera, and turn 3D on the layer 2 or the layer 3, i do get movement but the whole scaling and alignement seems wrong(either too large, or off screen).
What should i do to get it right?
(i can ask for a specific export of boujou if needed)
I’ve searched around for boujou info but it was cryptic at most.
And i couldnt test with the boujou demo since it cannot export.Note: i would use the internal ae trackers, but they are really bad when there’s zoom-in/zoom-out, even with adapt-feature on each frame. I tried quite a few time but the motion gets very jumpy… ideally i’d want it to work on the whole image, and find it’s zoom-in zoom-out factor since the panning is done on almost static content, but anyway boujou apparently gives much better precision so i’d like to be able to use the boujou files
Thanks for any help,
Kalin Cahal
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3 Replies
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If you’ve got the camera data, and it’s right you now need a way to position the objects you add in AE in the right place in 3d space. Ask the person doing the Boujou to include some of the trackers in the export, if there is something close to where you’re adding the new objects that has been tracked that would be best, otherwise a couple of points on the ground plane or other objects will help you position you’re new objects. I’ve done the same thing using PFMatch and it works well. When you import the camera the other reference points will come in as nulls in 3d space, unfortunately every time I’ve done it all names assigned in the tracker have been lost. Scrub your footage and make sure the nulls stay in the right place relative to the background footage before you waste any time replacing stuff (they should look like they’re stuck on the footage, you might want to paste in a small solid with the same position value as nulls disappear during ram previews).
Best of luck, it’s a tricky thing to do but if you can get it to work it looks really convincing.
One thing to watch out for, a lot of the 3d trackers have an option to export all of the tracking points, it seems like that would be useful for rebuilding the scene in AE but I found it to be pretty unmanageable as there are literally thousands of them and it’s a real pain finding the ones you need.
Also the nulls may come in with keyframes which you don’t need if the object they come from doesn’t move within the scene, for most points the camera should do all of the movement.
Hope I haven’t confused you even more,
Glenn Stewart
1k studios -
i have been trying boujou. Is there any way to specify it its a plane movement(no 3d)
Alternatively i tried pftrack but couldnt find out any way to export the data.
I must be doing something wrong but the tutorial for 2.0 didnt match the one for 3.0.
Any suggestions?(what about the same thing for pftrack as boujou, pure 2d tracking?) -
I don’t know about Boujou but exporting from PFTrack should work, I don’t have it on the box now but I think you have to right click on the export word to add an export, the one I used was the same maya camera as you used for Boujou.
Glenn Stewart
1k Studios
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