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Unsolve Frames
This tool, accessed from the Advance Solver Settings panel (top more button on the Solver panel), allows you to clear the solution (unsolve) frames in a shot. This allows you to recover from situations where you’ve deleted too many trackers during cleanup, or a long solve develops problems: you can unsolve problematic trackers and frames, then resume the solve in Refine mode.
Once any initial frames are unsolved, the amount of support for remaining solved trackers and frames is re-evaluated, and additional trackers or frames may be unsolved. This process continues repetitively as needed until everything has adequate support.
#Frames. Value. With Beginning or End selected, this is the number of frames unsolved from the beginning or end. This is typically a bit larger than the number of frames added in the most recent pass or two of the Solver; how far to “go back” in the solve. It might be 100-500 frames, typically.
Beginning. Radio button. Unsolve the given #frames from the beginning of the shot (for starters).
End. Radio button. Unsolve the given #frames from the end of the shot (for starters).
Playback range. Radio button. Unsolve the frames in the playback range, the little green and red triangles in the timebar, giving you exact control over the frames to be initially unsolved.
None. Radio button. Don’t unsolved any frames initially; used with Check whole
shot.
Check whole shot. Checkbox. When checked, SynthEyes will examine the entire length of the shot for inadequately supported frames, not just near the initially designated frames. This mode is used (along with None), to find problems in the interior of a shot (especially in response to solver messages telling you to run this tool).
Minimum frames. Integer. A tracker must be valid on this many solved frames for it to be considered adequately supported; if it has fewer, it will be marked unsolved. Note that while technically two frames might be necessary, typically the camera is so close together on adjacent frames that a tracker can’t accurately be localized.
Accordingly, a larger minimum frame value makes more sense—although too large a value may result in a solve being broken into pieces or completely unsolved. On tripod shots, a value of 1 is always used instead of this value.
Minimum trackers. Integer. A frame must have at least this many solved trackers to be considered adequately supported; if it has fewer, it will be unsolved. While a value down to 4 is permitted, typically this should be 6 or more. Too large a value may result in a solve being broken into pieces or completely unsolved. On tripod shots, a value of 2 is always used instead of this value
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