Deleting Bad Keyframes and Letting the Tracker Interpolate

When the motion is regular between keyframes, you can delete bad keyframes and let the Tracker interpolate the motion between two good keyframes.

To delete bad keyframes and let the Tracker interpolate:

1. Pause the analysis when the Tracker loses its reference feature.
2. Press Backspace to return to the last good frame. This deletes the bad keyframes.
3. Use either the frame controls to go to the next frame where the reference feature is clearly visible. Restart the analysis on this frame (or a later one) until you get a good keyframe.

The Tracker interpolates the motion (indicated by a simple straight line, meaning no keyframes) between the previous and next good keyframes. This works best with a few frames, and would not be appropriate for long sequences, as the interpolation is linear.