Is it a bad word? No search results on the Sorenson website nor presets.
I can't create a preset that it will accept. I understand that the specs are 29.97 fps and 640 x 640 and a bit rate below 2mps. But I've tried one with well below 1mps and still nothing that Instagram will accept.
Aparrently loading into Instagram from one's phone is the way to do it once an acceptable file has been created. In my case that would be Android. I understand there optimization requires different setting for each OS.