[Paraview] vtu file format

[Thierry Dubuis]

Hello all,

My best wishes for this new year.

I try to write the output of my software in the vtu format Unstructured 
Grid.
First, the ascii output works.
Now I try the binary output :
So first I try to write my data on PC in Little Endian and crypted in 
Base64.
When I try to load it in Paraview 2.5 I have an error, I debug and find 
Paraview reads 4 characters which is the size of the following binary 
block ???

Have a doc which more precision about this file format than the vtk file 
formats for VTK Version 4.2 (where I don't find the information about 
this block size) ?

Thanks for your help.

Best regards,
Thierry Dubuis