Load SWF content then create snapshots of the image produced at a resolution greater than 2880x2880
SWFShot was made for a pretty specific purpose, to get around the 2880 pixel size limit imposed by the Flash player. SWFShot does have a upper ceiling though. You won't be able to create a shot larger than 8192x8192 or one that is over 256MB.
￭ Adobe AIR