ok thanks got it. proper programs set properly and working properly could detect and extract the mixed up mess (thanks to mismatched stuff) even if its 60-24

and we all know how well the programs work that were buying :-)

the mismatches when working with pro-sumer stuff back in ANALOG never handled that stuff properly.
and consumer stuff , it even says:

"This is one reason why films viewed on typical NTSC home equipment may not appear as smooth as when viewed in a cinema. The phenomenon is particularly apparent during slow, steady camera movements which appear slightly jerky when telecined. This process is commonly referred to as telecine judder."

cant guess whos customers would have typical $50 dvd players and typical 60i inputting 30p displaing LCDs can you :-)

There are certain advantages to living in a 50Hz country. :-) Not only are we spared all the 24/30/60 hassles, but don't let's even get started on drop-frame timecode....... Brings me out in a sweat to even think about it. :-)

Just bear in mind that "progressive via interlace" (psf) *shouldn't* involve altering any data - just re-ordering it.