A screen capturing application is properly the most feasible way its being done now. EditDisk helps to swap files (so that a particular animation plays early, instead of having to play though alot of games to get to it)
I've done several searches over the years on the filename extensions used in the Animahjong and other early Sogna PC98 games but have yet to find a Susie or Grapholic filter for them. Stuff that old often had a Westside dedicated app to rip CG, but I've never found one for these games. Anyone that can supply either the plugin filters or a standalone app to rip files from AMX, AMV3, or other early Sogna games will get +10 rep on the spot.