After a lot of help from some of you guys on the "DNxHD Export Issues" thread, I have decided to use the UT Codec for lossless intermediates.
So I exported from PP CS6 choosing YUV422 BT.709 (ULH2) VCM, set to match my 1080p 23,976 16:9 original footage.
Comparing the original footage with the UT exported one, though, by placing both of them back into the timeline (couldn´t open the UT rendered one in any other player), I instantly noticed an overwhelming loss on the grayscale grading (haven´t checked for other possibles isues yet).
Here´s what it looks like (I hope the difference will clearly show here):
UT YUV422 BT.709 (ULH2) VCM:
So, the question: is UT really lossless or I´ve got something wrong?
To make things better, that issue does not occur with with the DNxHD export.
Thanks a lot.
DNxHD can export at 10 bit. UT is, unfortunately, still limited to 8 bit. (I'd love for the developer to get that up to 12.)
Ironically, the former is not mathematically lossless, while the latter is. However, my guess is you won't see any loss using DNxHD.
Wow. That means UT is useless for that workflow. Any other suggestions besides DNxHD?
Thanks again, Jim!
That's probably your best option, as long as you don't need to watch the exports. (Nothing seems to play them, though they open fine in PP and AE, and I'd assume other pro video software.)
Also keep in mind that all disk, broadcast and web delivery will be 8 bit, so if the Intermediate is only for the purpose of transcoding in other software, UT is still a good choice.