oops, sorry for the delayed response. It’s not a very good response, either, because I actually have no idea. I’ve never looked into doing any fancy GIF stuff on my mac, but I would imagine worst case scenario it’s probably possible using WINE or something like this to run windows applications. That said, I doubt the scripts/batch files wold work as-is, so it would likely take some work/legitimate understanding to get it going.
Other than that, there’s gotta be a media player that extracts frames into image files, like kmplayer and gomplayer do on Windows? That would cover the first of the two methods to import frames from raw files into photoshop. I don’t know of one, though…so…pls advise.