Hi all Thanks Monty for bringing up the topic. The following is just from my point of view as a negative 16 mm user
A film (as not video) is nowadays (far and between unfortunately) shot on negatives (wider dynamic range) whatever people may think. The time of crappy reversal news reels is gone. Negatives need to be scan on 10 or 16 bits /pixels and_no gamma._ RGB 8 bits is just not enough. Of course not everyone has a HP 10 bits screen to grade negs. BUT ... my point is that cinelerra would be a bit of a dent on proprietary systems with such a possibility. Hence the example is the C41 plugin which uses the RGB float system which Florent and I developed. Einar did put some work into it as well; but I could not test it (for now) As far as I can see (maybe not far enough :-) ) Bt601 it's almost an obsolete gamut, ideally a RGB float to Bt 709 with grading in between would be fantastic; e.g. can one modify the export through y4mpeg pipe ? ffmpeg can han handle the color matric and other LUTs now as well as a temporal denoiser !!! Once again (redundant info but just in case) https://vimeo.com/30647432 with some explanation. Of course it takes a hell of a time and you can't expect an automatic plugin. It has to be done manually. A slight light variation is transformed in a colour variation. That's why super 8 negs look like crap; the camera shutters are not good enough (old hardware decay) Again with a strict temporal denoiser such as the one in libavfilter -vf "hqdn3d=0:0:5:5" the issue id more or less addressed. Timewise with render farms it's just a non issue. My 2 cents Cheers Edouard On 05/11/12 03:41, Monty Montgomery wrote: >>> But then there are cinema-oriented formats,like Digital Intermediates and >>> >> such. >> > >> > >> > http://www.reduser.net/forum/printthread.php?t=2714&pp=10&page=310 > That was all somewhat confusing... need equations :-) But it's clear > they're talking about something not broadcast and not nonlinear > (gamma) full-swing. >
