Lengthening a shot

In Mocha, I have a short video which has some roto work already completed on it.

If the video gets additional frames added at the start and end thus lengthening the shot is it possible to include those frames in the Mocha project, whilst keeping the existing tracking data lined up with the correct frame?

Thanks
Graz

Thanks Mary,

I will try this out and post back if I get any problems.

Hi Graz,

If it is in mocha V3 it is pretty simple to do, because you an move keyframes in the timeline over. Simply relink the footage and move the keyframes in the dope sheet. But in other versions of mocha, adding frames at the beginning of the shot requires doing some editing in the curve editor, and I do not recommend it.