rendering in after effects

[David Bogie]

[lukasz wiecz] “whats difference between [faux] progressive and field rendering? was watching a video and they say you dont want to edit stretch field if you field rendered. if this is true how would you resize and why cant you edit this in field rendered mode?
any tutorials on this would be great, currentl im going through lynda.com ones.”

could be a translation issue here. “By “field stretching” do you mean time stretching or or do you mean attempting to change a progressive clip into an interlaced clip?

If you put a 30 frame progressive clip into a 30 frame interlaced comp, the objects that get rendered as interlaced will appear different—smoother—than the progressive clips because they have twice the temporal data (but the same spatial data). that is, the intlerlaced objects will render in 1/60 second slices but the progressive items will render two identical fields for each 1/30th second slice.

bogiesan