I imagine how it should work, but not where to get time for everything
Btw, about Full processing/Normal recompress/Fast recompress: there is no straightforward difference. I saw variation in some hidden details which are difficult to observe/explain.
"Fast recompress" tries to set decoding and encoding formats automatically (not very helpful unless at least source or destination is VFW codec).
Normal recompress does not let you setup filters, but also does not disable them. I can't explain this.
IMO only Full processing should remain of these 3 modes.