Looking for dendritic solidification video footage
 

I am looking for video footage that shows real-time dendritic solidification in metal (preferably in steel) for a documentary I am working on. Does anyone know if such footage exists? Or can anyone point me to a metallurgist expert who may have such footage?

I found two videos on YouTube. One is a simulation video, but I am hoping to find a real-time video (not a simulation). The second is a real-time video, but it appears to be copper (not steel).

Any help would be appreciated. Thanks.

http://www.youtube.com/watch?v=JSnM92b0_qg

http://www.youtube.com/watch?v=S07fP...d&noredirect=1