1. Tracking the Footage
on Editor and select Movie Clip Editor.
opens the Movie Clip Editor. Click
on Open to import the footage in the
movie clip editor.
to the folder with the image sequence of the footage. Select the first frame
and click on the Open Clip button.
you can see the footage inside the movie clip editor window. Click on Prefetch Frames button to load the
image sequence in the RAM. Alternatively, you can press P key.
Since the footage has been shot by a hand held camera so you need to perform 2 points tracking. Try to search a good contrast point to track the footage.
have searched a point, press and hold Ctrl
key and click with left mouse button onto that point. A tracker appears on the
this track point a name as Track Point 1.
click on Track Forward button to
track the footage.
a couple of seconds, the footage gets tracked. You can play the footage to
check the reliability of the track. In my case, the footage has been tracked
without any problem.
search for the second good point to track the footage. The right corner of the
wall is perfect for this. Press and hold Ctrl
key and click with left mouse button onto that corner. A tracker appears on the
right corner point.
this track point as Track Point 2.
on Track Forward button to track the
footage. Even this time, the footage gets tracked perfectly. The tracking has
been completed successfully.
2. Camera and Armature Setup
Create empties from both tracks. Click on Tracking tab and select Reconstruction mode.
on Link Empty to Track for both tracking points.
to 3D View mode. You will see two empties in the viewport.
the box selected, press X key. Click on Delete to delete the box.
With the Alt key pressed, press R and G keys one after another. The camera sets on the origin and looks to the center from the top view.
the camera up a bit in Z direction.
0 key to look through the camera.
Press N for the side bar. Check on Background Images. Click on Movie Clip and select the image sequence file.
With the first empty selected, press Shift-A key. Go to Armature > Single Bone and create a single bone on the first empty.
Tab to jump into Edit mode. Pick the tip of the bone and move it
to the second empty.
Tab key again to leave the Edit mode. Select the right empty. Press
Shift-S key for the centered cursor. With the armature selected, press Shift-S
again to snap it to the right empty.
Parent the armature to the empties. First select the armature and then
select the left empty. Press Ctrl-P key and select Object (Keep transform).
Press Ctrl-Tab key to jump into Pose mode. First select the right empty and then select the armature. Press Ctrl-Shift-C to add a constraint.
Select Stretch To constraint. Now the armature is connected to both
to File > Import > Image sequence as planes.
the flag.tga file which is in a sequence and click on Import Images
as Planes. I have made a flag animation in image sequence which I have to
composite with the live footage.
The image plane comes with the solid grey color.
see the actual texture/ animation, enable Texture in the display menu.
scale up the image, press S and scale the image plane.
Attach the flag footage to the armature, so that the flag footage could
follow the image. Select the flag footage and the armature respectively and
then press Ctrl-P keys. Select Bone option.
the footage and you will see the foreground image sequence of flag simulation
going perfectly with the background footage.
The Finished Article
In this part of the tutorial series, I showed you how to create two-point tracking. In the next part of the tutorial, I will show how to perform four-points perspective tracking.
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