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Da Vinci Questions
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well with the fact that FCP might confuse the clips if multiple shots were used from the same source clip. and even if I run commercial mode, a lot of re linking manually will have to be done. I won’t be too critical on this though, it’s what the client wants, and they are the ones that will have to relink everything manually. I’ve expressed this and they don’t mind. I’m just making sure everything I get into and out of Da Vinci will be prim and proper!
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Strange thing is, sometimes indie projects are more picky about staying RAW than seasoned professionals, just because they heard somewhere it’s the way to go (even if it ends up on a crappy projector at a festival playing from Blu-ray at best, if not DVD). Pros tend to think more in terms of overall quality vs. effort.
Fact is, Resolve can’t handle speed changes the way Apple’s Motion does (not even to mention Twixtor or the like). The quality loss from frame doubling in Resolve is much bigger than the visible effect of going ProRes. I admit it’s very good to grade from RAW, but once the grade is agreed upon, it’s not too bad to go ProRes and do the speed change from there.
So, I’d rather grade the original speed footage, hand it back to the editor and have him/her do the speed change.
Of course, if the workflow is intended for cinema with DCP, DPX would be the way to go. But then you wouldn’t use FCP for final stages, only for the offline edit. And you’d need a serious RAID.
Director of the Institute of Media Research (IMF) at Braunschweig University of Arts
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Yeah, not disagreeing with anything, but the client wants what the client wants right? I think we might go uncompressed quicktime at the end of this. They can re ingest in FCP that way, go into their VFX software, re transcode certain sections to pro res 4×4 if they need to for easier formats, but it will keep it as lossless as possible. I just wanted them to give me a fully finished product so I could render out DPX and avoid any QT gamma issues that might arrive and ruin my hard work 🙁 they could always re render the dpx to quicktime out of after effects. But I guess you can’t win every battle.
this leads to my last question though. I currently have a hdp2 to dreamcolor set up. it does dci p3 emulation, and I know that is a digital projector emulation and I should grade with that setting on my monitor is the destiny of this film is for digital projection. My question is, how vastly different is this emulation compared to rec 709? Do i have to do 2 separate grades, or if it comes down to 709 standard on let’s say blu ray, it won’t look TOO different.
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DCI-p3 isn’t emulating “digital projection” exactly, it’s emulating the color space used by those projectors subscribing to the DCI standards…which is not all projectors- many use rec. 709 color space. If you graded in DCI-p3 but are going to a finishing format that uses Rec. 709, you would have to apply the appropriate LUT.
My clients usually project from HDCam or HDCamSR (rec. 709) in settings where the projector is (supposed to be) calibrated to rec. 709, like film festivals or screening rooms of post houses or agencies. So I grade in 709, deliver in 709, they project in 709, and if the film is successful and needs to be converted into a digital cinema package or other DCI-p3 format, a LUT could be applied then…
Some would say that it’s better to work in DCI-p3 since it has the “wider” gamut but I like to keep it simple when possible…
KC
prehistoricdigital.com
hardworkingpixels.com -
how different would it look if i graded in p3, and had it recompressed to a 709 delivery? would it look relatively the same, just certain values clipped? or would it look nothing like i did in p3, and it would only look that way if it was put through a projector with the p3 lut on it?
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Well don’t think of it as re-compressed to rec 709; compression isn’t what you’re doing. I wouldn’t count on any sort of LUT being used at the point of projection: if your deliverables are 709, the material should be 709, and if they are DCI your deliverables should be DCI-p3. So just know what formats you are going to, definitely get specs (in writing) from the production.
You might have to test it, I’ve never seen a “p3>709 LUT vs. 709>p3 LUT” test. My guess is that if the LUTs are accurate, it would be very difficult to tell the difference, but considering the dreamcolor doesn’t actually allow you to see 100% DCI-p3, there’s a chance you’ll have surprises if you grade in that color space…
KC
prehistoricdigital.com
hardworkingpixels.com -
think i got my wording wrong about compression. I just meant that if i graded with the dreamcolor’s p3 emulation, how different would it look if i burned that master file to a blu ray, and basically in doing so it’s getting converted to a 709 color space. I”m wondering if the gamut just gets clipped, so we see less nuances I originally intended, and I’d probably be ok with that, or would it just make it look funky. This is more about curiosity than actually doing it. With your advice I”m probably gonna stick with 709 unless otherwise specified. I might run this p3 emulation and 709 comparison on my own time to just see it for myself…
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So got my system setup. When i start da vinci it gives me an error saying its using my gt 120 for core processing. I have gt 120 in slot 2, quadro 4000 in slot 1. Nd gui monitors hooked to the gt. Is this error message normal? I click the “about da vinci” it says 1 gpu. I ran some tests nd it seems like its using the quadro. The gpu usage meter starts filling up as i drop in nodes. Is it using my quadro at all? Gt 120 isnt a cuda card so i cant see how its possible it would be using it for the processing. But the error message has me really worried.
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You need to connect the UI monitor to the GT120 in Slot 2. Also, please install the NVIDIA driver for Q4000/Mac from their website. If you update to 10.6.6, you need to re-install the NVIDIA driver.
Regards,
Rohit -
this might definitely be the culprit! when I tried to install the quadro 4000 it needed me to update mac os first, and than i tried to install the drivers off the cd and it said it was up to date already. will try this tonight, thanks so much.
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