It's a workaround, but why not just highlight every keyframe in the timeline and move them all back.
Example :- you want frames 10 to 20 - move the whole timeline back 10 frames (so that frame 10 is now frame 0), set length of export to 10.
I'm *sure* that'll work, but *why* you would want to do it this way is another matter. The disk space you are wasting will be ridiculous. Why not export the whole thing as a single sequence and use ExtractAnimSeq() to do the same job? Or just set the current frame yourself using code?
Hope that helps :)
Example :- you want frames 10 to 20 - move the whole timeline back 10 frames (so that frame 10 is now frame 0), set length of export to 10.
I'm *sure* that'll work, but *why* you would want to do it this way is another matter. The disk space you are wasting will be ridiculous. Why not export the whole thing as a single sequence and use ExtractAnimSeq() to do the same job? Or just set the current frame yourself using code?
Hope that helps :)