I dont say this soft (http://www.fix8.com/index.html) is good, but its maybe good inspiration for creating alive units avatars or some intros of SP/COOP Campaign missions.

What do you think?

Is any kind of motion capture software used in Spring games development now?

We don't even have skeletal animation (sans megahax involving lua&shaders), what's with motion capture.

You dont need skeletal animation for capturing "facemoves" and creating video for intro of SPmission/campaing or making "something" like animated .gif for unit description in your gameGUI.

But thx, my question was partly answered.

yep, for those you need morphers.. we dont have them either.. we have a scale comand.. and luashadders to transform (place angelshark.vid here).
And its good that way. Growth is not inhibitted by that fact. If you really want something, you learn to code it in lua. And it is done.

Interestingly, upspring can import BVH animations, and there is a vast trove (over 2500) of animations captured by some univeristy in BVH format...

Linky linky: http://www.cgarena.com/forum/viewtopic.php?p=52789

yeah, but its 'convert animations into bos code' script is broken something fierce

That is what I think too.
Scratch videos but some comics would be possible, something like in Z:

Or for unitguides in manuals you could have animated gifs like this:

I guess "somehow" this would also be possible ingame.
(Though unit avatars usually only show the head and I can not think of any springunit that has a nice enough head. Or even a head that consists of more than 1 piece)

http://abload.de/gallery.php?key=bq7TpOYa

viewtopic.php?f=14&t=25104&hilit=unit+poser&start=0
viewtopic.php?t=27268

This recent advances by Pressure Line might also be helpful:
viewtopic.php?f=23&t=28198&start=40
(have units hold stuff or give them hats etc)