Hi,
while examining the upstream commit history:
http://vtk.org/gitweb?p=VTK.git;a=history;f=IO/FFMPEG;hb=HEAD
I noticed http://vtk.org/gitweb?p=VTK.git;a=commitdiff;h=d48033e127b208228b46f820d454c5eca1c719e1
That commit should fix this FTBFS. Any chance you could update soon?
--
regards,
Reinhard