[vtkusers] Compiling VTK with FFMPEG

[Jefferson Thomas]

Hi,
How to compile VTK with FFMPEG ? I would like to use the
vtkFFMPEGWriter so I have to compile FFMPEG.
I can get it i.e. from page http://www.vtk.org/get-software.php and
compile it, but than, how to tell VTK to use it ?
There is no VTK_USE_FFMPEG -like thing in VTK ccmake. What variable
should I set up ?
It is not explained on that page nor in any other place.
Thomas