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When a scene with phases is solved, data flows from the main SynthEyes scenes, through the phase pipes, and back to the original main SynthEyes scene. If you want each overall solve to start "from scratch" you need to make sure that the results of a prior solve don't interfere with the next solve. (Of course, if your phase tree is set up to refine, refine, and refine again, you WANT the prior solution to drive the next, that's the point! Your need to tell SynthEyes what you want.) The Clean Start phase can help with that.
Clean Start removes existing solve results: the camera/object paths, solved FOV values, tracker solve positions and mo-cap paths, error results, and distortion values. Any cameras or objects with a Refine solving mode are set back to Automatic, similarly Refine Tripod is set back to Tripod. Trackers have their "far" status set back to the status you wanted, rather than the result of any prior solve.
There is also a checkbox that allows all tracker locks to coordinate values to be removed. Locks to other trackers are unaffected.
Clean Start does not change any camera/moving object that is Disabled—presumptively these have been already solved and are locked against further changes. Any tracker that is attached to any disabled object is not cleared either.
Clean Start only makes the routine changes listed above. More complex phase trees can require more complex work to get a true clean start, depending on exactly what is being done.
The strategy is that instead of making Clean Start more and more complex, you should use the many other phases available to adjust the scene state exactly as you need it, because you, the tracking artist, knows best what you need!
©2023 Boris FX, Inc. — UNOFFICIAL — Converted from original PDF.