This option was removed in 2.64:
First, the old option called Tracker was eliminated. The old Hybrid tracker
was doing exactly the same as the SAD tracker, with the exception that
it could do more accurate subpixel precision tracking by following the
brute-force search with a subpixel refinement. The SAD tracker was
also limited in that it only worked on 8-bit images and is unsuitable
for 32-bit float images like those used in Mango.
Secondly, the KLT tracker with its pyramid tracking helped tracking
blurry footage, but could be quite useless when the background texture
was moving in the opposite direction of the feature point. In such
cases the Hybrid tracker was much better than KLT, and for this reason
the KLT tracker was made obsolete.
In other words, the SAD and KLT options were replaced with a improved hybrid tracker with new options.
From the wiki:
The new tracker is a unified algorithm with more options, and
specifically some options to make it work exactly the same as the old
non-planar Hybrid tracker. The options are:
- Motion Model defines which possible motions tracking feature has. Currently supported models are: Location only, Location+Rotation,
Location+Scale, Location+Rotation+Scale, Affine and Perspective. This
option should be set depending on which motion a particular feature
has and it'll make tracking most accurate for such a motion.
Perspective is usually used to track a planar feature, but often
Affine is a good enough approximation and may have more stable tracks.
- Prepass enables a two pass tracking, where the first pass is a brute force tracking of location only, and the second pass will use
tracking of the full motion model refining the first pass. To get
behavior that is almost identical to the Hybrid tracker in previous
Blender versions, enable Prepass and set the motion model to Location
- Normalize means patterns will be normalized by their average intensity while tracking, to make them invariant to illumination
changes. An example where this is useful is a scene where a marker
moves in the shadow of an actress. Previously it would not be possible
to track such a situation, scale adaption would shrink the area to
compensate for the change in illumination, losing the track. With
"Normalize" turned on, the patch is correctly tracked and scale is
- Correlation is now a single value for all tracking settings and defines the minimal correlation between a matched pattern and a
reference to be considered a successful tracking. If the tracker is
giving up too easily, decrease this value, or if the tracker is
slipping too much when it should give up sooner, increase this value.
Note that it is possible to simulate the old Hybrid tracker with the current method:
To get behavior that is almost identical to the Hybrid tracker in
previous Blender versions, enable Prepass and set the motion model to