For example, I wouldn't use GAP to extract frames from a video as virtualdub is far better. PS: If you have problems getting GAP to work it's worth mentioning what you plan on doing with it as there may be scripts or other apps people can recommend. Then you can get GAP from here (from what I remember, perhaps there is a slightly newer version if you do a search): I would suggest you do something similar. I have a 64bit installation of GIMP 2.10 for regular use and use the portableapps version of 2.8 (32 bit) for any use of ancient plugins like this. It won't work with 2.10, I tried when 2.10 first came out out of interest.

I think most people use it with an old version of GIMP like 2.6 - I'll leave it up to the experts around here to confirm - but I have it installed in a portable version of 2.8 and still occasionally use some of the functions like the videoencoder.

GAP is old and sadly hasn't been updated for a long time.

I was wondering if I'd missed some new update or something when I saw GAP 4.9.3 (the GAP versions I had were 2.6 and 2.7) but I see that GAP is for something completely different - 'GAP (Groups, Algorithms, Programming) is a system for computational discrete algebra'.