I am not sure I understand the reasonning behind the resize prior to deinterlacing. Example, capture at 640 X 480, resize up to 800 x 600. Or larger, then run deinterlace filters and possibly others, ...

I sometimes record things i nDreamDVB (pure DVB-s,just dumps the MPEG2 stream it receives from the sattelite to a file) and sometimes it has the Comb lines in it (on older shows,the newer shows that ...