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DaVinci 4k raw dng playback settings

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Gianni Saponara
DaVinci 4k raw dng playback settings
on Jan 4, 2015 at 6:04:44 pm

Hi guys,
I\'ve some troubles with DaVinci (10 version) 4k raw playback settings...
All 4k raw dng clips are located on my external hd T3 CalDigit (12Tb thunderbolt 2). I\'m working on a mac book pro retina 15\" (Intel Core i7 quad-core 2,3GHz - Turbo Boost 3,5GHz - 16GB at 1600MHz - Flash PCIe 512GB - Intel Iris Pro Graphics - NVIDIA GeForce GT 750M 2GB) and I cannot playback my clips...
Can you help me please?
Thanks


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Dmitry Kitsov
Re: DaVinci 4k raw dng playback settings
on Jan 4, 2015 at 6:55:48 pm

Hello, Gianni,
After looking at the specification of your system, I am somewhat confused about your GFX configuration. As a rule of thumb Intel Iris Pro Graphics is not a sufficiently powerful GPU to work in DaVinci Resolve.
nVidia GeForce GT 750M might work OK.
Would you be able go to DaVinci Resolve Preferences I/O - GPU tab and see which of the GPUs is detected when you experiencing this issues?
Are you able to play other media?


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Gianni Saponara
Re: DaVinci 4k raw dng playback settings
on Jan 4, 2015 at 9:26:18 pm

Hi Dmitry,
in Preferences GPU I\'ve setted Cuda, but I can see the clips only with timeline setted on 1920x1080 and quality resolution Cinema DNG at 1/4...
Please, can you tell me the whole DaVinci settings for playback and edit in 4k?
Thanks


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Dmitry Kitsov
Re: DaVinci 4k raw dng playback settings
on Jan 5, 2015 at 3:43:09 am

When you go in resolve preferences to the system profile. What do you see there as a processing GPU?


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Gianni Saponara
Re: DaVinci 4k raw dng playback settings
on Jan 5, 2015 at 8:48:49 am

Hi Dmitry,
I see three options:
Auto
Open CL
Cuda
I've clicked on Cuda


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Dmitry Kitsov
Re: DaVinci 4k raw dng playback settings
on Jan 5, 2015 at 5:16:36 pm

I am sorry I meant to ask what do you see in Preferences>system overview.


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Gianni Saponara
Re: DaVinci 4k raw dng playback settings
on Jan 5, 2015 at 5:35:27 pm

I see GEForce GT 750 M


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Vincenzo Onorato
Re: DaVinci 4k raw dng playback settings
on Jan 5, 2015 at 10:21:10 pm

Hi Gianni,

I'm afraid the new Macbook Pro is not recommended for 2K/4K Raw workflow. Maybe with an external PCI Expander with additional GPU cards, you can solve the problem, but this is not a cheap option. Take a look at this: Netstor NA211TB+GTX680 GPU

V.O.


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Bill Ravens
Re: DaVinci 4k raw dng playback settings
on Jan 6, 2015 at 1:29:12 pm

It may not be recommended, but, Resolve is flexible enough in playback quality that it can yield smooth playback of 4K by dialing back the resolution of the displayed images. The critical hardware component is the speed of the playback drive. It better be capable of 500 MBps or it won't playback, no matter how much you dial the resolution back.



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Gianni Saponara
Re: DaVinci 4k raw dng playback settings
on Jan 6, 2015 at 1:47:37 pm

Do you think I can playback and edit 4k raw clips with DaVinci, if I upgrade my MacBook pro with a Sonnet Echo Express SE II and a BlackMagic DeckLink SDI 4K?


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Bill Ravens
Re: DaVinci 4k raw dng playback settings
on Jan 7, 2015 at 1:22:14 pm

If you have a BMD component installed, you should have access to the BMD Disk Speed Checker. I would run that and check the thruput of your existing drives. Your Macbook will not playback 4K at full resolution, no matter what you do. You need to dial the rez back to at least 1/4.



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Jamie Allan
Re: DaVinci 4k raw dng playback settings
on Jan 9, 2015 at 11:42:26 pm
Last Edited By Jamie Allan on Jan 9, 2015 at 11:47:30 pm

If you're using Blackmagic RAW DNG 4K then the tests I've seen have put the bandwidth around 290MB/s, which should be fine with your T3 as it should run around 550MB/s as long as its not over 90% full. However there is a lot of variance with DNG RAW regarding bit depth and the particular version you're using (if not BMD's)

I also imagine your mobile GPU is not powerful enough to work with 4K material. We recommend either the highest specification MacPro D700 workstations or Linux Resolve Quad GPU systems to work with this sort of material

My advice would be to work in a high quality HD proxy (such as ProRes 4444), and if required re-link to the original material before exporting if you need to deliver at 4K. Be sure to go through all your shots again though once you relink to check on the grades as you may need to tweak some bits and check on sizing

Jamie Allan
Post Production Consultant
DaVinci Specialist (Linux/Mac)
Jamie@Jigsaw24.com


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Gianni Saponara
Re: DaVinci 4k raw dng playback settings
on Jan 19, 2015 at 12:56:15 am
Last Edited By Gianni Saponara on Jan 19, 2015 at 1:12:33 am

Thank you Jamie!
I've just updated my MacBookPro. I've purchased an expander PCIe (Sonnet Echo Express SE II) a BMD DeckLink SDI 4K and a Gigabyte GTX 970 4GB. The graphic card isn't yet installed. The DeckLink doesn't work properly, I don't know why, but when I playback a 4k raw clip on DaVinci the fan of my Mac turn very fast...maybe the problem could be due to GE750M, or wrong settings...I really don't know...I hope someone could help me...This is the speed test of mac drive


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