@Happycube: CapableMetal has kindly provided me a brief clip taken with your method, and I must say I'm really impressed!
There are two little problems...
Output is 744 pixel wide, and seems cropped at the sides; would it be possible to obtain a full wide output, and let the user decide the width?
Some residual chroma noise; is it possible to get two samples for each frame, one with chroma phase at 0°, the other at 180°, then merge them, to wipe out chroma noise? Or, if not, to let the user decide the chroma phase - something like chromaphase=true will be 0°, while chromaphase=false will be 180°.
Sorry if it seems I'm asking to much - again, your software is great as it is now, but if it could be improved a bit, it will be (nearly?) perfect!