cool! Do you see any chance to make the filter also an export-filter. I have done something similar with my importuncompressed-filter. If you have an uncompressed omf, you can write data back in the same file! So you could: digitize master tape, run avisynthscript for deinterlacing, write back to the same file, play out to digitalbeta. Or you could make 16:9 letterboxing very quick
regards,
hanfrunz