Not sure this is the best place to ask this but :
I'm working on a converter to extract data out of some old model files and turn it in to a format I can use in Unity. Up until now I've only been dealing with static models, or skinned models for which I haven't extracted the weights so I've been writing out files as text based wave front obj files as they have a very simple vertex,normal,uv, faces format. I've then been using an FBX Converter to package them up with the textures and pass them on into Unity. This all works fine. However I'm now hoping to extract skeleton and vertex bone weighting information from the files and as far as I can see there is no way in Obj to specify this. Can anyone recommend an alternative output format that I could write to that would allow me to specify all this information and have it piped through an FBX Converter or similar?