To reproduce it yourself, just try this : on a 1000 frames clip, track 2 layers from frame say 50 to say 750 and try the camera solver :
Ok, why not. But you’ll have the same if you set in and out points, on the TL or on each layer properties or both… Should I understand that I cannot solve if the clip is not specifically trimmed before to the part of my interest ? What if I decide that the cam data I want to export is only between i & o points that don’t contain the whole clip ?
A super basic track… Suddenly, although nothing particularly changed on the screen :
Well, no problem. Click track again, same messafe. Go way before on the TL and track again, it’s ok for a few frames but it happnes again.
What d’you think and what are the specific conditions that can trigger that ?
Thx in advance