HDR video White Balance presets

[3pointedit]

I have been using HDR video to aperture pull, when going from bright outdoors to dark indoors. However outside is a different color temperature to inside.

Is it possible to rapidly switch white ballance preset with the ISO change on each frame? That is store a different WB for each ISO.

[a1ex]

That's difficult - if there is a way to change it via DIGIC registers, it will be possible.

The idea of using HDR for such transitions is very interesting BTW.