How to process interlaced and the final result to be interlaced

the best solution for filtering interlaced video is this: avisource("video.avi") assume?ff() #set the correct fieldorder! bob() # or use any other bobbing deinterlacer you like #maybe with converttoyv12(interlaced=false), if needed yourfilterchainhere() converttoyuy2(interlaced=false) assume?ff() #set the fieldorder again (the same as above!) separatefields().selectevery(4,0,3).weave()

separatefields().temporalfilter().weave() results in vertical misalignement! wich further leads to bobbing denoised static backgrounds on TV! because of this I recommend my method.

I belived that bob() transform a field based clip in a frame based clip that have as frame a single enlarged field. Now I understand that bob() transform a field based clip with 2 different fields per frame in a field based clip with 2 identical fields in a frame. It is that right?