I have a 3 minutes clip , I would like to roto brush constantly during these 3 minutes , sometimes I press space to pause and correct the roto brush segments , and infortuntely sometimes I lose all the roto save before , so I need to restart.(this is the small green line advancing then dissapearing). If I freeze a portion , I cannot continue the roto brush , I cannot freeze twice or more to save all roto segments.
Maybe rotobrush tool have a time limit
What you suggest to do ?