Unfortunately I'v had to use cropping in Texture Packer to fit all the animation images for a single sprite into a 1024x1024 image so yes the sizes fluctuate some what as you can see from the output below but the images are subject to license so I'd better not post 'out-of-bounds' of that agreement
climb__000.png:2:2:36:62
climb__001.png:40:2:36:61
climb__002.png:78:2:37:61
climb__003.png:117:2:36:60
climb__004.png:155:2:37:59
climb__005.png:194:2:38:60
climb__006.png:234:2:38:61
climb__007.png:274:2:38:61
climb__008.png:314:2:37:61
climb__009.png:353:2:38:61
climb__010.png:393:2:38:61
climb__011.png:433:2:38:61
climb__012.png:473:2:37:59
climb__013.png:512:2:36:60
climb__014.png:550:2:37:61
climb__015.png:589:2:36:61
crouch__000.png:627:2:47:53
crouch__001.png:676:2:47:53
crouch__002.png:725:2:47:53
crouch__003.png:774:2:47:53
crouch__004.png:823:2:47:53
crouch__005.png:872:2:47:53
crouch__006.png:921:2:48:53
crouch__007.png:2:66:47:53
crouch__008.png:51:66:47:53
crouch__009.png:100:66:47:53
crouch__010.png:149:66:48:53
crouch__011.png:199:66:47:53
crouch__012.png:248:66:47:53
crouch__013.png:297:66:47:53
crouch__014.png:346:66:47:53
crouch__015.png:395:66:47:53
crouch_aim__000.png:444:66:48:53
crouch_aim__001.png:494:66:48:53
crouch_aim__002.png:544:66:48:53
crouch_aim__003.png:594:66:48:53
crouch_aim__004.png:644:66:48:53
crouch_aim__005.png:694:66:48:53
crouch_aim__006.png:744:66:48:53
crouch_aim__007.png:794:66:48:53
crouch_aim__008.png:844:66:48:53
crouch_aim__009.png:894:66:48:53
I think as I'm far more comfortable working with code than images or graphical tools I'm going to take the output I got and write a importer, I think the automated tools have taken me as far as they can I just didn't want to over complicate what's usually done in a single function call