2017

Table Of Contents
Tracking with the Tracer
Tracking with the Tracer is done using the same method as with regular garbage masks. See
Animating Masks
Using Tracking
(page 760).
NOTE When animating selected vertices with the Stabilizer, the vertices do the tracking, not the pickers. Once
you obtain the tracking data, you will need to go back through your clip from frame 1 onwards, making adjustments
to the pickers where necessary.
Troubleshooting the Tracer
Every clip has its own challenges and requires a certain amount of tweaking and fine-tuning to achieve the
best results.
One of the Tracer segments (localized keys) on my matte shows noisy black and white
artefacts and nothing else. What's wrong?
Problem
The two pickers are sampling luma and/or chroma values that are too similar.Possible Cause
Try moving one of the pickers to a differently coloured area, or enlarge or reduce the size
of one or both of the pickers to include more varied colour information. If there is simply
Solution
no area in the clip that differs enough, you will need to use an advanced gradient for that
segment.
One of the Tracer segments (localized keys) on my matte appears to be showing the
black/white matte information reversed, or as a negative. What's wrong?
Problem
You may have reversed the position of the two pickers.Possible Cause
Try exchanging the inside picker for the outside one and vice-versa.Solution
I can't get a good colour sample from the area outside the mask edge in a certain portion
of the image. What can I do?
Problem
There is simply none (or not enough) of the needed colour in the immediate area of that
particular picker.
Possible Cause
You can drag the picker somewhere further away from the vertex to get a better colour
sample. The picker can be located anywhere on the image in order to facilitate the best
possible colour sample. Do not, however, place a picker outside the image.
Solution
I'm getting really nice edge detail on my matte, but I'm also getting black/white holes in
my matte. Is there anything I can do?
Problem
This may be caused by the generation of random noise and/or artefacts.Possible Cause
GMask | 775