3D stereo (side-by-side) to separate stream AVI converters pls?

Hi, as a 3D photographer I shoot multicam 3D photos (Illuminessence.co.uk) I have a Fuji Finepix V3 3D glasses free media player that plays 3D MPO photo files & separate stream AVI files e.g. NOT side-by-side by 2 channels in one AVI container. I've never come across this format before apart from my Fuji W3 3D camera which shoots video in that format. Does anyone know a converter I can use to take side by side 3D & convert to separate stream AVI pls?

Will