@Dialhot, how about using ToK ?
Can't we tell ToK to do a full encode at a certain CQ, and then small samples starting at the same CQ, I think it's called "Faster Prediction".
If we set ToK to do length of sample = 75, and 20 samples per minute (for GOP of 25, PAL movie), and after that use "Faster Prediction" with "Speed Up" = 10% or perhaps 20%...
Wouldn't that make a full encode, and then compare the size of the full encode with a lot of small samples? ( I know this would take a lot of time, but if it is done over night, then it wouldn't matter )
Maybe I'm wrong, I haven't tried it myself.
What do you think, is it possible?
Anerboda