CinemaDNG with ReadOIIO


#1

Natron’s ReadOIIO can read CinemaDNG. I see it uses OpenImageIO for that. So does it make sense to use Natron command line as the way to transcode CinemaDNG to a format suitable for offline editing? Or is Natron not really meant for that, and a different tool should be used? The Python bindings for OpenImageIO?


#2

Hi,
Did you succeed reading DNG sequence in Natron ? I’m asking because I didn’t. The sequence we took with a Blackmagic URSA Mini appear all black. With a ReadOIIO node I can’t see nothing. Only DaVinci Resolve could read it to transcode in another format.
If you have any advice…


#3

Yes its from Blackmagic Production 4K Camera. It plays fine in Natron.


#4

Ok but how ? Can you be more specific? With the standart readOIIO you did? on wich plateform ?
I’m using version 2.0.2 on Windows 7 64bit
Thancks for your help


#5

Just standard ReadOIIO it works straight away. From various versions of Natron, including 2.0, 2.01, 2.02, 2.03. On OSX and on Linux.


#6

Thank you nickcarroll.
I tested with those test footages and it worked : http://video.blackmagicdesign.com/Shot_1.zip
But not with our own : https://we.tl/yg7MbmJmW8

Maybe there is a difference between them (in recording) that I don’t understand :frowning:


#7

Blackmagic URSA support was added in libraw 0.18, we don’t use that version yet.


#8

Hey ramellij checkout the trial version of this utility:
http://www.slimraw.com/faq.html
Process your footage with this and see if it can the appear in Natron.


#9

Thanks nickcarroll I will try


#10

You can use Dave Coffin’s dcraw to convert the URSA DNG files to TIFF for Natron:
dcraw -w -T *.dng


#11

Libraw 0.18 is currently in beta(3) and will probably be included in the next Natron release (2.2).

LibRaw 0.18 supports:

  • BlackMagic Micro Cinema Camera, URSA Mini
  • BlackMagic URSA
  • BlackMagic Pocket Cinema Camera, Production Camera 4k

#12

Hello,
Do you have any news about that feature ?


#13

Libraw 0.18 is now marked stable. I will test the new version this week and upgrade if nothing breaks. Then Natron will/should support:

  • BlackMagic Micro Cinema Camera, URSA Mini
  • BlackMagic URSA
  • BlackMagic Pocket Cinema Camera, Production Camera 4k

#14

Hi,
Any news about the integration of the last stable Libraw 0.18 ?


#15

libraw 0.18.1 will be in the next Natron patch release (2.2.6)
I also added options to control a few libraw options (such as the demosaic algorithm)


#16

If you’re on macOS, you’re lucky: you can try the latest snapshot.
If not, you will have to wait until we upgrade libraw on other systems