Cineform Flip

mjroddy wrote on 1/13/2006, 10:47 AM

I just accidentally digitized a few clips through Cineform with the M2 lens adapter mode turned on (flips image 180 degrees).
Am I seeing things, or does doing that soften up the image.
Then, when I went into Pan/Crop tool to make it right, it got even softer! Do I have something set incorrectly, or is this the way it is, processing the image thus?

Comments

David Newman wrote on 1/13/2006, 3:39 PM

CineForm's Connect HD doesn't soften the image in its 180 degree flip as the flip is performed in the uncompressed yuv data before the CineForm compression is applied, in a field aware manner (it does swap without mixing the top and bottom fields.) The problem with a downstream NLE flip, is the top field will end up in the bottom field slot, requiring the software to interpolate the "in between" scan line, that is way your post flip looks soft (your Vegas flip adds a vertical blur.) Doing a lossless 180 degree flip in an NLE is a trick -- you need to do a frame based one pixel shift to restore top and bottom field alignment during the flip (I'm not sure how to do that in Vegas.)

David Newman
CTO, CineForm

mjroddy wrote on 1/13/2006, 4:31 PM

"Doing a lossless 180 degree flip in an NLE is a trick -- you need to do a frame based one pixel shift to restore top and bottom field alignment during the flip"

Scarey. But, as the soon-to-be new owner of a RedRock M2, I'm pleased that the CineForm flip will preserve my HDV cleanness.

Thanks Dan.